ASROCK IMB-155 Thin Mini-ITX Motherboard User Manual

Contents hide

1 ASROCK IMB-155 Thin Mini-ITX Motherboard

2 Specifications

7 Frequently Asked Questions

8 Documents / Resources

8.1 References

ASROCK IMB-155 Thin Mini-ITX Motherboard

Specifications

Model: IMB-155
Compliance: Part 15 of the FCC Rules

Battery Type: CR2032
Battery Voltage: 3.3V

Copyright Notice
No part of this documentation may be reproduced, transcribed, transmitted, or translated in any language, in any form or by any means, except duplication of documentation by the purchaser for backup purpose, without written consent of ASRockInd Inc. Products and corporate names appearing in this documentation may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe.

Disclaimer
Specifications and information contained in this documentation are furnished for informational use only and subject to change without notice, and should not be construed as a commitment by ASRockInd. ASRockInd assumes no responsibility for any errors or omissions that may appear in this documentation. To the extent permitted by law, with respect to the contents of this documentation, ASRockInd does not provide warranty of any kind, either expressed or implied, including but not limited to the implied warranties or conditions of merchantability or fitness for a particular purpose. In no event shall ASRockInd, its directors, officers, employees, or agents be liable for any indirect, special, incidental, or consequential damages (including damages for loss of profits, loss of business, loss of data, interruption of business and the like), even if ASRockInd has been advised of the possibility of such damages arising from any defect or error in the documentation or product.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:

This device may not cause harmful interference, and
This device must accept any interference received, including interference that may cause undesired operation.

The terms HDMI® and HDMI High-Definition Multimedia Interface, and the HDMI logo are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.

WARNING
THIS PRODUCT CONTAINS A BUTTON BATTERY. If swallowed, a button battery can cause serious injury or death. Please keep batteries out of sight or reach of children.

CALIFORNIA, USA ONLY
The Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance controlled in Perchlorate Best Management Practices (BMP) regulations passed by the California Legislature. When you discard the Lithium battery in California, USA, please follow the related regulations in advance. “Perchlorate Material- special handling may apply, see www.dtsc.ca.gov/hazardouswaste/ perchlorate”

AUSTRALIA ONLY
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage caused by our goods. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. If you require assistance, please call ASRockInd Tel : +886-2-28965588 ext.123 (Standard International call charges apply).

ASRockInd follows the green design concept to design and manufacture our products, and makes sure that each stage of the product life cycle of ASRockInd products is in line with global environmental regulations. In addition, ASRockInd discloses the relevant information based on regulatory requirements. DO NOT throw the motherboard in municipal waste. This product has been designed to enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin indicates that the product (electrical and electronic equipment) should not be placed in municipal waste. Check local regulations for the disposal of electronic products.

Button Battery Safety Notice

WARNING

INGESTION HAZARD: This product contains a button cell or coin battery.

DEATH or serious injury can occur if ingested.
A swallowed button cell or coin battery can cause Internal Chemical Burns in as little as 2 hours.

KEEP new and used batteries OUT OF REACH of CHILDREN
Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.
- Remove and immediately recycle or dispose of used batteries according to local regulations and keep away from children. Do NOT dispose of batteries in household trash or incinerate.
- Even used batteries may cause severe injury or death.
- Call a local poison control center for treatment information.
- Battery type: CR2032
- Battery voltage: 3.3V3V
- Non-rechargeable batteries are not to be recharged.
- Do not force discharge, recharge, disassemble, heat above (manufacturer’s specified temperature rating) or incinerate. Doing so may result in injury due to venting, leakage or explosion, resulting in chemical burns.
- This product contains an irreplaceable battery.
- This icon indicates that a swallowed button battery can cause serious injury or death. Please keep batteries out of sight or reach of children.

Introduction

Thank you for purchasing the ASRockInd IMB-155 motherboard, a reliable motherboard produced under ASRockInd’s consistently stringent quality control. It delivers excellent performance with a robust design conforming to ASRockInd’s commitment to quality and endurance. In this manual, chapters 1 and 2 contain an introduction of the motherboard and step-by-step guide to the hardware installation. Chapters 3 and 4 contain the configuration guide to BIOS setup and software support.

Because the motherboard specifications and the BIOS software might be updated, the content of this manual will be subject to change without no-tice. In case any modifications of this manual occur, the updated version will be available on ASRockInd website without further notice. You may find the latest CPU support lists on ASRockInd website as well. ASRockInd website: https://www.asrockind.com/IMB-155 If you require technical support related to this motherboard, please visit our website for specific information about the model you are using. https://www.asrockind.com/technical-support

Package Contents
ASRockInd IMB-155 Motherboard (Mini-ITX Form Factor: 6.7-in x 6.7-in, 17.0 cm x 17.0 cm) ASRockInd IMB-155 Jumper Setting Instruction 1 x I/O Panel Shield

Specifications

Form Factor	Dimensions	Mini-ITX (6.7-in x 6.7-in)
Processor System	CPU	Intel^® Pentium/Celeron Braswell SoC Supports Hyper-Threading Technology Default N3160 Quad core 6W processor
	Core Number	(By CPU, Max 4)
	Max Speed	(By CPU)
	L2 Cache	(By CPU)
	Chipset	(By CPU)
	BIOS	UEFI
Expansion Slot	PCIe	1 x PCIe x1 slot
	PCI	0
	Mini-PCIe	1 (full/half size, supports PCIe x1 and USB device. USB is shared with USB2H_2_3 header)
	mSATA	1 (full size, supports SATA device)
Memory	Technology	Dual Channel DDR3L 1333/1600 MHz SDRAM
	Max.	8GB
	Socket	2 x SO-DIMM
Graphics	Controller	Intel^® Gen8 Intel^® Graphics DX 11, OGL3.2
	VRAM	Shared Memory
	VGA	Supports max. resolution 1920 x 1200
	LVDS	Dual channel 24-bit co-lay with eDP, max resolution 1920 x 1200@60Hz
	HDMI	Supports HDMI 1.4a, max resolution 1920×1200
	DVI	No
	DisplayPort	No
	Multi Display	Yes (Triple Display)
Ethernet	Ethernet	10/100/1000 Mbps
	Controller	2 x Realtek RTL8111G
	Connector	2 x RJ-45
SATA	Max Data Transfer Rate	SATA3 (6.0Gb/s)
Rear I/O	VGA	1
	DVI	0
	HDMI	1
	DisplayPort	0
	Ethernet	2

	USB	4 x USB 3.0
	Audio	2 (Mic-in, Line-out)
	Serial	0
	PS/2	0
Internal Connector	USB	4 (2 x 2.0 pitch header USB 2.0 compliant)
	LVDS/ Inverter	1/1
	VGA	0
	Serial	4 x 2.0 pitch header RS-232 (COM1 supports RS-232/RS-422/485)
	SATA	1 x SATA3 (6.0Gb/s)
	mPCIe	1
	Parallel	1 (Co-lay with 8in/8out DIO)
	mSATA	1
	IrDA	0
	GPIO 8-bit	8 x GPI + 8 x GPO
	SATA PWR Output Con	1
	Speaker Header	1
Watchdog Timer	Output	Output from super I/O to drag RESETCON#
Watchdog Timer	Interval	256 Segments, 0,1,2…255 Sec/Min
Power Requirements	Input PWR	12V or 19~24V DC in (4-pin ATX PWR Con) / ATX
	Power On	AT/ATX Supported
		-AT : Directly PWR on as power input ready
		-ATX : Press button to PWR on after power input ready
Environment	Temperature	0ºC – 60ºC

Motherboard Layout

2-pin UPS Module Power Input Connector
ATX Power Connector (Input 12V or 19~24V)
SATA Power Output Connector
SATA3 Connector (SATA_1)
LVDS Panel Connector
BLT_PWM1
Backlight Volume Control (BLT_VOL1)
Backlight Power Connector (BLT_PWR1)
Backlight Power Select (LCD_BLT_VCC) (BKT_PWR1)
Panel Power Selection (LCD_VCC) (PNL_PWR1)

4-Pin CPU FAN Connector (+12V)
System Panel Header
Printer Port / GPIO Header (LPT_GPIO1)

4-Pin Chassis FAN Connector (+12V)
Digital Input / Output Default Value Setting (JGPIO_SET1)
Digital Input / Output Power Select

ATX/AT Mode Select
Chassis Intrusion Headers
Clear CMOS Header

COM1, 4, 5, 6 Headers (RS232/422/485)
COM Port PWR Setting Jumpers
LPC Header

Buzzer
SPDIF Header
Front Panel Audio Header

3W Audio AMP Output Wafer
USB2.0 Connectors (USB2H_0_1, USB2H_2_3)
USB Power Setting Jumpers

VGA Header
USB3 Power Setting Jumpers

I/O Panel

DC Jack
USB 3.0 Ports (USB3_0_1)

USB 3.0 Ports (USB3_2_3)
LAN RJ-45 Port*
LAN RJ-45 Port*

VGA Port (VGA1)
HDMI Port (HDMI1)
Line out (Green)

Microphone (Pink)

There are two LED next to the LAN port. Please refer to the table below for the LAN port LED indications.

LAN Port LED Indications

Activity/Link LED

Status	Description
Off	No Link
Blinking	Data Activity
On	Link

SPEED LED

Status	Description
Off	10Mbps connection
Orange	100Mbps connection
Green	1Gbps connection

Installation

This is a Mini-ITX form factor (6.7″ x 6.7″, 17.0 x 17.0 cm) motherboard. Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it.

Make sure to unplug the power cord before installing or removing the motherboard. Failure to do so may cause physical injuries to you and damage to motherboard components.

Screw Holes
Place screws into the holes to secure the motherboard to the chassis.

Do not over-tighten the screws! Doing so may damage the motherboard.

Pre-installation Precautions
Take note of the following precautions before you install motherboard components or change any motherboard settings.

Unplug the power cord from the wall socket before touching any component.
To avoid damaging the motherboard components due to static electricity, NEVER place your motherboard directly on the carpet or the like. Also remember to use a grounded wrist strap or touch a safety grounded object before you handle components.

Hold components by the edges and do not touch the ICs.
Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that comes with the component.

Before you install or remove any component, ensure that the power is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, and/or components.

Installation of Memory Modules (SO-DIMM)
IMB-155 motherboard provides two 204-pin DDR3 (Double Data Rate 3) SO-DIMM slots, which support Dual Channel DDR3L (low voltage).

If you install one memory module only, please install it on DDR3_A1.
It is not allowed to install a DDR or DDR2 memory module into a DDR3 slot; otherwise, this motherboard and SO-DIMM may be damaged.

Please make sure to disconnect the power supply before adding or removing SO-DIMMs or the system components.
The SO-DIMM only fits in one correct orientation. It will cause permanent damage to the motherboard and the SO-DIMM if you force the SO-DIMM into the slot at incorrect orientation.

Installing a SO-DIMM

Step 1. Align a SO-DIMM on the slot such that the notch on the SO-DIMM matches the break on the slot.
Step 2. Firmly insert the SO-DIMM into the slot until the retaining clips at both ends fully snap back in place and the SO-DIMM is properly seated.

Expansion Slots (mini-PCIe, mini-SATA and PCI Express Slots)
There is 1 mini-PCIe slot, 1 mini-SATA slot and 1 PCI Express slot on this motherboard.

mini-PCIe slot

MINI_PCIE1 (mini-PCIe slot; half size) is used for PCI Express mini cards.

mini-SATA slot

MINI_SATA1 (mini-SATA slot; full size) is used for mSATA cards.
PCIE slot: PCIE1 (PCIE x1 slot) is used for PCI Express x1 lane width cards.

Installing an expansion card

Step 1. Before installing the expansion card, please make sure that the power supply is switched off or the power cord is unplugged. Please read the documentation of the expansion card and make necessary hardware settings for the card before you start the installation.
Step 2. Remove the system unit cover (if your motherboard is already installed in a chassis).
Step 3. Remove the bracket facing the slot that you intend to use. Keep the screws for later use.

Step 4. Align the card connector with the slot and press firmly until the card is completely seated on the slot.
Step 5. Fasten the card to the chassis with screws.
Step 6. Replace the system cover.

Jumpers Setup
The illustration shows how jumpers are setup. When the jumper cap is placed on pins, the jumper is “Short”. If no jumper cap is placed on pins, the jumper is “Open”. The illustration shows a 3-pin jumper whose pin1 and pin2 are “Short” when jumper cap is placed on these 2 pins.

Clear CMOS Jumper
(CLRCMOS1) (see p.8, No. 19)

Note: CLRCMOS1 allows you to clear the data in CMOS. To clear and reset the system parameters to the default setup, please turn off the computer and unplug the power cord from the power supply. After waiting for 15 seconds, use a jumper cap to short pin2 and pin3 on CLRCMOS1 for 5 seconds. However, please do not clear the CMOS right after you update the BIOS. If you need to clear the CMOS when you just finish updating the BIOS, you must boot up the system first, and then shut it down before you do the clear-CMOS action. Please be noted that the password, date, time, user default profile, and MAC address will be cleared only if the CMOS battery is removed.

Digital Input / Output Power Select

(5-pin JGPIO_PWR1) (see p.8 No. 16)
- 1- 2: +12V
- 2- 3: +5V
- 3- 4: +5V
- 4- 5: GND

ATX/AT Mode Select
(3-pin PWR_JP1) (see p.8 No. 17)

1- 2: AT Mode
2- 3: ATX Mode

Panel Power Selection (LCD_VCC)

(5-pin PNL_PWR1)
(see p.8 No. 10)

Use this to set up the VDD power of the LVDS connector.

1- 2: LVDD: +3V
2- 3: LVDD: +5V

4-5: LVDD: +12V

Backlight Power Select

(LCD_BLT_VCC)

(5-pin BKT_PWR1)
(see p.8 No. 9)

Use this to set up the backlight power of the LVDS connector and the panel backlight power of BLT_PWM1.

2: LCD_BLT_VCC: +5V
3: LCD_BLT_VCC: +12V
5: LCD_BLT_VCC: DC_IN

Backlight Control Level (CON_LBKLT_CTL)

(3-pin BLT_PWM1) (see p.8, No. 6)

1- 2: +3V Level
2- 3: +5V Level

USB2 Power Setting Jumpers (for USB2H_0_1)

(3-pin USB_PWR_H1) (see p.8, No. 28) (for USB2H_2_3)
(3-pin USB_PWR_H2) (see p.8, No. 28)
- 1- 2: +5V
- 2- 3: +5VSB
- 1- 2: +5V
- 2- 3: +5VSB

USB3 Power Setting Jumpers (for USB3_0_1)

(3-pin USB3_PWR1)
(see p.8, No. 30)

(for USB3_2_3)

(3-pin USB3_PWR2)
(see p.8, No. 30)
1- 2: +5V
2- 3: +5VSB
1- 2: +5V
2- 3: +5VSB

Digital Input / Output Default Value Setting

(3-pin JGPIO_SET1)
(see p.8, No. 15)
1- 2: Pull-High
2- 3: Pull-Low

Onboard Headers and Connectors

Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over these headers and connectors. Placing jumper caps over the headers and connectors will cause permanent damage of the motherboard!

SATA3 Connector

(SATA_1: see p.8, No. 4)

This Serial ATA3 (SATA3) connector supports SATA data cables for internal storage devices. The current SATA3 interface allows up to 6.0 Gb/s data transfer rate.

USB 2.0 Connectors

(9-pin USB2H_0_1)
(see p.8 No. 27)
(9-pin USB2H_2_3)
(see p.8 No. 27)
There are two USB 2.0 connectors on this motherboard. Each USB 2.0 connector can support two USB ports.

System Panel Header

(9-pin PANEL1) (see p.8 No. 12)

This header accommodates several system front panel functions. Connect the power switch, reset switch, and system status indicator on the chassis to this header according to the pin assignments below. Note the positive and negative pins before connecting the cables.

PWRBTN (Power Switch)
Connect to the power switch on the chassis front panel. You may configure the way to turn off your system using the power switch.

RESET (Reset Switch)
Connect to the reset switch on the chassis front panel. Press the reset switch to restart the computer if the computer freezes and fails to perform a normal restart.

PLED (System Power LED)
Connect to the power status indicator on the chassis front panel. The LED is on when the system is operating. The LED keeps blinking when the sys-tem is in S1 sleep state. The LED is off when the system is in S3/S4 sleep state or powered off (S5).

HDLED (Hard Drive Activity LED)
Connect to the hard drive activity LED on the chassis front panel. The LED is on when the hard drive is reading or writing data. The front panel design may differ by chassis. A front panel module mainly consists of power switch, reset switch, power LED, hard drive activity LED, speaker and etc. When connecting your chassis front panel module to this header, make sure the wire assignments and the pin assign-ments are matched correctly.

3W Audio AMP Output Wafer
(4-pin SPEAKER1) (see p.8 No. 26)

PIN	Signal Name
1	OUTLN
2	OUTLP
3	OUTRP
4	OUTRN

Front Panel Audio Header
(9-pin HD_AUDIO1) (see p.8 No. 25)

This is an interface for front panel audio cables that allows convenient connection and control of audio devices.

High Definition Audio supports Jack Sensing, but the panel wire on the chassis must support HDA to function correctly. Please follow the instruction in our manual and chassis manual to install your system.
If you use AC’97 audio panel, please install it to the front panel audio header as below:
- Connect Mic_IN (MIC) to MIC2_L.
- Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L.
- Connect Ground (GND) to Ground (GND).
- MIC_RET and OUT_RET are for HD audio panel only. You don’t need to connect them for AC’97 audio panel.
- To activate the front mic. Go to the “FrontMic” Tab in the Realtek Control panel. Adjust “Recording Volume”.

Chassis Fan Connector
(4-pin CHA_FAN1) (see p.8 No. 14)

Please connect the fan cable to the fan connector and match the black wire to the ground pin.

CPU Fan Connector

(4-pin CPU_FAN1)
(see p.8 No. 11)

Please connect the CPU fan cable to the connector and match the black wire to the ground pin. Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin CPU fan still can work successfully even without the fan speed control function. If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this motherboard, please connect it to Pin 1-3.

ATX Power Connector
(Input +12V & +19V~+24V) (see p.8 No. 2)

Please connect a DC +12V & +19V~+24V power supply to this connector.

1- 4: GND
2- 3: DC Input

Printer Port / GPIO Header

(25-pin LPT_GPIO1)
(see p.8 No. 13)

If you want to use the printer port function, please short pin4 and pin5 on Digital Input / Output Power Select (JGPIO_PWR1).

GPIO

PIN	Signal Name	PIN	Signal Name
26	NC	25	NA
24	GND	23	SIO_GP30
22	GND	21	SIO_GP31
20	GND	19	SIO_GP32
18	GND	17	SIO_GP33
16	GND	15	SIO_GP34
14	GND	13	SIO_GP35
12	JGPIOPWR	11	SIO_GP36
10	JGPIOPWR	9	SIO_GP37
8	SIO_GP43	7	SIO_GP40
6	SIO_GP44	5	SIO_GP41
4	SIO_GP45	3	SIO_GP42
2	SIO_GP46	1	SIO_GP47

LVDS Connector
(40-pin LVDS1) (see p.8 No. 5)

PIN	Signal Name	PIN	Signal Name
2	LCD_VCC	1	LCD_VCC
4	LDDC_CLK	3	+3.3V
6	LVDS_A_DATA0#	5	LDDC_DATA
8	GND	7	LVDS_A_DATA0
10	LVDS_A_DATA1	9	LVDS_A_DATA1#
12	LVDS_A_DATA2#	11	GND
14	GND	13	LVDS_A_DATA2
16	LVDS_A_DATA3	15	LVDS_A_DATA3#
18	LVDS_A_CLK#	17	GND
20	GND	19	LVDS_A_CLK
22	LVDS_B_DATA0	21	LVDS_B_DATA0#
24	LVDS_B_DATA1#	23	GND
26	GND	25	LVDS_B_DATA1
28	LVDS_B_DATA2	27	LVDS_B_DATA2#
30	LVDS_B_DATA3#	29	DPLVDD_EN
32	GND	31	LVDS_B_DATA3
34	LVDS_B_CLK	33	LVDS_B_CLK#
36	CON_LBKLT_EN	35	GND
38	LCD_BLT_VCC	37	CON_LBKLT_CTL
40	LCD_BLT_VCC	39	LCD_BLT_VCC

Backlight Volume Control
(7-pin BLT_VOL1) (see p.8 No. 7)

PIN	Signal Name
1	GPIO_VOL_UP
2	GPIO_VOL_DW
3	PWRDN
4	LVDS1 BLUP
5	LVDS1 BLDW
6	GND
7	GND

Backlight Power Connector
(6-pin BLT_PWR1) (see p.8 No. 8)

PIN	Signal Name
1	GND
2	GND
3	BL CTL
4	BL EN
5	LCD_BLT_VCC
6	LCD_BLT_VCC

SATA Power Output Connector
(4-pin SATA_PWR1) (see p.8 No. 3)

Buzzer Header
(2-pin BUZZ1) (see p.8, No. 23)

Chassis Intrusion Headers
(2-pin CI1, CI2: see p.8, No. 18)

This motherboard supports CASE OPEN detection feature that detects if the chassis cover has been removed. This feature requires a chassis with chassis intrusion detection design.

COM1 Header (RS232/422/485)
(9-pin COM1: see p.8, No. 20)

This motherboard supports RS232/422/485 on COM1 port. Please refer to below table for the pin definition. In addition, COM1 port (RS232/422/485) can be adjusted in BIOS setup utility > Advanced Screen > Super IO Configuration. You may refer to page 29 for details.

COM1 Port Pin Definition

PIN	RS232	RS422	RS485
1	DCD	TX-	RTX-
2	RXD	RX+	N/A
3	TXD	TX+	RTX+
4	DTR	RX-	N/A
5	GND	GND	GND
6	DSR	N/A	N/A
7	RTS	N/A	N/A
8	CTS	N/A	N/A
9	+5V/+12V	+5V/+12V	+5V/+12V
10	NC	NC	NC

COM4, 5, 6 Headers (RS232)
(9-pin COM4/COM5/COM6: see p.8, No. 20)

PIN	Signal Name	PIN	Signal Name	PIN	Signal Name	PIN	Signal Name	PIN	Signal Name
1	DDCD#	3	TTXD	5	GND	7	RRTS#	9	+5V/+12V
2	RRXD	4	DDTR#	6	DDSR#	8	CCTS#	10	NC

LPC Header

(19-pin LPC1) (see p.8, No. 22)

This connector supports a Trusted Platform Module (TPM) system, which can securely store keys, digital certificates, passwords, and data. A TPM system also helps enhance network security, protects digital identities, and ensures platform integrity.

SPDIF Header
(3-pin SPDIF1: see p.8, No. 24)

VGA Header
(10-pin VGA1: see p.8, No. 29)

PIN	Signal Name	PIN	Signal Name	PIN	Signal Name	PIN	Signal Name	PIN	Signal Name
10	DDC_DATA	8	VSYNC	6	GND	4	GND	2	GND
9	DDC_CLK	7	HSYNC	5	BLUE	3	GREEN	1	RED

UPS Module Power Input Connector
(2-pin TO_UPS1: see p.8, No. 1)

Pin1: GND
Pin2: DC Input

UEFI SETUP UTILITY

Introduction
This section explains how to use the UEFI SETUP UTILITY to configure your system. The UEFI chip on the motherboard stores the UEFI SETUP UTILITY. You may run the UEFI SETUP UTILITY when you start up the computer. Please press <F2> or <Del> during the Power-On-Self-Test (POST) to enter the UEFI SETUP UTILITY; otherwise, POST will continue with its test routines. If you wish to enter the UEFI SETUP UTILITY after POST, restart the system by pressing <Ctl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis. You may also restart by turning the system off and then back on. Because the UEFI software is constantly being updated, the following UEFI setup screens and descriptions are for reference purposes only, and they may not exactly match what you see on your screen.

UEFI Menu Bar

The top of the screen has a menu bar with the following selections:

Main: To set up the system time/date information
Advanced To set up the advanced UEFI features
H/W Monitor: To display the current hardware status
Security: To set up the security features
Boot: To set up the default system device to locate and load the Operating System
Exit: To exit the current screen or the UEFI SETUP UTILITY

Use < left > key or < right > key to choose among the selections on the menu bar, and then press <Enter> to get into the sub-screen. You can also use the mouse to click on your required item.

Navigation Keys
Please check the following table for the function description of each navigation key.

Navigation Key(s) Function Description

Main Screen
When you enter the UEFI SETUP UTILITY, the Main screen will appear and display the system overview.

Advanced Screen
In this section, you may set the configurations for the following items: CPU Configuration, Chipset Configuration, Storage Configuration, Super IO Configuration, ACPI Configuration and USB Configuration.

Setting wrong values in this section may cause the system to malfunction.

Instant Flash
Instant Flash is a UEFI flash utility embedded in Flash ROM. This convenient UEFI update tool allows you to update system UEFI without entering an operating system first like MS-DOS or Windows®. Just launch this tool and save the new UEFI file to your USB flash drive, floppy disk or hard drive, then you can update your UEFI only in a few clicks without preparing an additional floppy diskette or other complicated flash utility. Please be noted that the USB flash drive or hard drive must use FAT32/16/12 file system. If you execute the Instant Flash utility, the utility will show the UEFI files and their respective information. Select the proper UEFI file to update your UEFI, and reboot your system after UEFI update process completes.

CPU Configuration

Intel SpeedStep Technology
Intel SpeedStep technology is Intel’s new power-saving technology. Processors can switch between multiple frequencies and voltage points to enable power saving. The default value is [Enabled]. Configuration options: [Enabled] and [Disabled]. If you install Windows® 8 / 8.1 and want to enable this function, please set this item to [Enabled]. This item will be hidden if the current CPU does not support Intel SpeedStep technology.

Please note that enabling this function may reduce CPU voltage and lead to system stability or compatibility issues with some power supplies. Please set this item to [Disabled] if above issues occur.

CPU C States Support
Enable CPU C States Support for power saving. It is recommended to keep C3, C6 and C7 all enabled for better power saving.

Enhanced Halt State (C1E)
Enable Enhanced Halt State (C1E) for lower power consumption.

Intel Virtualization Technology
When this option is set to [Enabled], a VMM (Virtual Machine Architecture) can utilize the additional hardware capabilities provided by Vanderpool Technology. This option will be hidden if the installed CPU does not support Intel Virtualization Technology.

Chipset Configuration

Primary Graphics Adapter
This allows you to select [Onboard] or [PCI Express] as the boot graphics adapter priority. The default value is [PCI Express].

Share Memory
Configure the size of memory that is allocated to the integrated graphics processor when the system boots up.

Active LVDS
Use this to enable or disable the LVDS. The default value is [Enabled].

Panel Type Selection
Use this to select the panel type.

Primary IGFX Boot Display
Select a primary VGA.

Onboard HD Audio
Select [Auto], [Enabled] or [Disabled] for the onboard HD Audio feature.

Front Panel
Select [Auto] or [Disabled] for the onboard HD Audio Front Panel.

Onboard HDMI HD Audio
This allows you to enable or disable the Onboard HDMI HD Audio feature.

Onboard LAN 1
This allows you to enable or disable the Onboard LAN 1 feature.

Onboard LAN 2
This allows you to enable or disable the Onboard LAN 2 feature.

PCIE1 Link Speed
Select the link speed for PCIE1.

Deep S5
Mobile platforms support Deep S5 in DC only and desktop platforms support Deep S5 in AC only. The default value is [Disabled].

Storage Configuration

SATA Controller(s)
Use this item to enable or disable the SATA Controller feature.

SATA Mode Selection
Use this to select SATA mode. The default value is [AHCI Mode]. AHCI (Advanced Host Controller Interface) supports NCQ and other new features that will improve SATA disk performance but IDE mode does not have these advantages.

Aggressive Link Power Management
Use this item to configure Aggressive Link Power Management.

Hard Disk S.M.A.R.T.
Use this item to enable or disable the S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) feature. Configuration options: [Disabled] and [Enabled].

Super IO Configuration

COM1 Configuration
Use this to set the parameters of COM1. Select COM1 port type: [RS232], [RS422] or [RS485].

COM4 Configuration
Use this to set the parameters of COM4.

COM5 Configuration
Use this to set the parameters of COM5.

COM6 Configuration
Use this to set the parameters of COM6.

LPT_GPIO1 Port Configuration
Use these set parameters of the onboard parallel port.

WDT Timeout Reset
This allows users to enable/disable the Watch Dog Timer timeout to reset system. The default value is [Disabled].

ACPI Configuration

Suspend to RAM
Use this item to select whether to auto-detect or disable the Suspend-to- RAM feature. Select [Auto] will enable this feature if the OS supports it.

ACPI HPET Table
Use this item to enable or disable the ACPI HPET Table. The default value is [Enabled]. Please set this option to [Enabled] if you plan to use this motherboard to submit Windows® certification.

PCIE Devices Power On
Use this item to enable or disable PCIE devices to turn on the system from the power-soft-off mode.

RTC Alarm Power On
Use this item to enable or disable the RTC (Real Time Clock) to power on the system.

USB Keyboard/Remote Power On
Use this item to enable or disable the USB Keyboard/Remote to power on the system.

USB Mouse Power On
Use this item to enable or disable the USB Mouse to power on the system.

USB Configuration

Legacy USB Support
Use this option to select legacy support for USB devices. There are four configuration options: [Enabled], [Auto] and [UEFI Setup Only]. The default value is [Auto]. Please refer to below descriptions for the details of these four options:

[Enabled] – Enables support for legacy USB.
[Auto] – Enables legacy support if USB devices are connected.
[UEFI Setup Only] – USB devices are allowed to use only under UEFI setup and Windows / Linux OS.

Hardware Health Event Monitoring Screen
In this section, it allows you to monitor the status of the hardware on your system, including the parameters of the CPU temperature, motherboard temperature, CPU fan speed, chassis fan speed, and the critical voltage.

CPU_FAN1 Setting
This allows you to set CPU_FAN1’s speed. Configuration options: [Full On] and [Automatic Mode]. The default value is [Full On].

CHA_FAN1 Setting
This allows you to set CHA_FAN1’s speed. Configuration options: [Full On] and [Automatic Mode]. The default value is [Full On].

Case Open Feature
This allows you to enable or disable the case open detection feature. The default is value [Disabled].

Clear Status
This option appears only when the case open has been detected. Use this option to keep or clear the record of the previous chassis intrusion status.

Security Screen
In this section, you may set, change, or clear the supervisor/user password for the system.

Supervisor Password
Set or change the password for the administrator account. Only the administrator has the authority to change the settings in the UEFI Setup Utility. Leave it blank and press Enter to remove the password.

User Password
Set or change the password for the user account. Users are unable to change the settings in the UEFI Setup Utility. Leave it blank and press Enter to remove the password.

Secure Boot
Enable support for Windows 8 64-bit Secure Boot.

Boot Screen
In this section, it will display the available devices on your system for you to configure the boot settings and the boot priority.

Fast Boot
Fast Boot minimizes your computer’s boot time. There are three configuration options: [Disabled], [Fast], and [Ultra Fast]. The default value is

[Disabled]. Please refer to descriptions below for the details of these three options:
[Disabled] – Disable Fast Boot.
[Fast] – The only restriction is that you may not boot by using a USB flash drive.
[Ultra Fast] – There are a few restrictions.

Only supports Windows® 8 64-bit UEFI operating system.
You will not be able to enter BIOS Setup (Clear CMOS or run utility in Widows® to enter BIOS Setup).
If you are using an external graphics card, the VBIOS must support UEFI GOP in order to boot.

Boot From Onboard LAN
Use this item to enable or disable the Boot From Onboard LAN feature.

Setup Prompt Timeout
This shows the number of seconds to wait for setup activation key.

Bootup Num-Lock
If this item is set to [On], it will automatically activate the Numeric Lock function after boot-up.

Boot Beep
Select whether the Boot Beep should be turned on or off when the system boots up. Please note that a buzzer is needed.

Full Screen Logo
Use this item to enable or disable the OEM Logo. The default value is [Enabled].

CSM (Compatibility Support Module)

CSM
Enable to launch of the Compatibility Support Module. Please do not disable unless you’re running a WHCK test. If you are using Windows® 8 64-bit and all of your devices support UEFI, you may also disable CSM for faster boot speed.

Exit Screen

Save Changes and Exit
When you select this option, it will pop-out the following message, “Save configuration changes and exit setup?” Select [OK] to save the changes and exit the UEFI SETUP UTILITY.

Discard Changes and Exit
When you select this option, it will pop-out the following message, “Discard changes and exit setup?” Select [OK] to exit the UEFI SETUP UTILITY without saving any changes.

Discard Changes
When you select this option, it will pop-out the following message, “Discard changes?” Select [OK] to discard all changes.

Load UEFI Defaults
Load UEFI default values for all the setup questions. The F9 key can be used for this operation.

Launch EFI Shell from the filesystem device
Attempts to launch EFI Shell application (Shell64.efi) from one of the available filesystem devices.

Software Support

Install Operating System
This motherboard supports Microsoft® Windows® operating systems: 8.1 64-bit / 8 64-bit. Because motherboard settings and hardware options vary, use the setup procedures in this chapter for general reference only. Refer to your OS documentation for more information.

Frequently Asked Questions

Q: What should I do if the button battery is swallowed?
A: If a button battery is swallowed, seek immediate medical help as it can cause serious injury or death. Keep batteries away from children and follow proper disposal guidelines.

Q: Can I recharge the CR2032 battery?
A: No, non-rechargeable batteries like CR2032 should not be recharged to avoid potential hazards such as venting, leakage, or explosion.

Documents / Resources

ASROCK IMB-155 Thin Mini-ITX Motherboard [pdf] User Manual
IMB-155, IMB-155 Thin Mini-ITX Motherboard, IMB-155, Thin Mini-ITX Motherboard, Motherboard

References

User Manual