MACHINIST H81M-PRO-S1 User's Manual
Specifications
| Processor | H81M PRO |
| Processor Support | Supports Intel 4th generation Core i3/i5/i7, Xeon E3/V3 series, Celeron G series and Pentium G series processors. |
| Southbridge | H81 Chipset |
| RAM Technology | Dual channel DDR3 |
| RAM Maximum Capacity | 32GB (16GB*2) |
| RAM Memory Slot | 2 * DDR3 |
| PS/2 | Green: mouse. Purple: keyboard |
| Display Interface | 1 * HDMI, 1 * VGA |
| USB | 2 * USB 2.0; 2 * USB3.0 |
| Ethernet | 1 * Gigabit LAN |
| AUDIO | 1 (Mic-in, Line-out, Line-in) |
| CFAN | 1 * 4PIN |
| SFAN | 1 * 3PIN |
| Internal Connector ATXPWR Interface | 1 * 8PIN Power Socket; 1 * 24PIN Power Socket |
| Internal Connector USB2.0(front) | 1 |
| Internal Connector USB3.0(front) | 1 |
| Internal Connector M.2(SATA) | 1 |
| Internal Connector SATA Interface | 4 (2 * SATA3.0; 2 * SATA2.0) |
| Internal Connector JAUDIO(front) | 1 |
| Internal Connector JCOM (front) | 1 |
| Internal Connector JCMOS Port | 1 |
| Internal Connector PCIe | 1 * PCIe x16; 1 * PCIe x1 |
| Internal Connector JPEAK1 | 1 |
| Environment Temperature Range | Working Environment: Temperature: 0~50°C, Humidity: 5%~95% Storage Environment: Temperature: -20~70°C, Humidity: 5%~95% |
| Physical Size | 220mm*170mm |
Overview of Components
The MACHINIST H81M-PRO-S1 motherboard is a Micro ATX form factor board designed for Intel 4th generation processors. It features the H81 chipset and supports DDR3 memory.
Package List:
- H81M Pro Motherboard * 1
- SATA Cable * 1
- I/O Blocking * 1
The motherboard layout includes the LGA 1150 CPU socket, DDR3 DIMM slots, PCIe expansion slots (PCIe x16 and PCIe x1), M.2 slot, SATA connectors, and various internal headers for front panel connections, audio, fans, and USB ports. The rear I/O panel provides connectivity for PS/2 devices, HDMI, VGA, USB 3.0, USB 2.0, LAN, and audio jacks.
Install CPU & Fan
Follow these steps to install the CPU and its cooler:
- Lift the CPU socket retention lever.
- Align the CPU's triangle mark with the socket's triangle mark and gently place the CPU into the socket.
- Lower the retention lever to secure the CPU.
- Apply thermal paste (or tape) evenly between the CPU and the heatsink.
- Install the CPU cooler onto the heatsink and connect its 4-pin fan power connector to the CPU_FAN header on the motherboard.
Important Notes:
- Ensure the motherboard supports the CPU.
- Always unplug the power cord before installing or removing the CPU.
- Retain the CPU protective cap after installation.
- Do not power on the computer without a CPU cooler installed.
- Ensure the CPU heatsink forms a tight seal.
- Protect CPU socket pins with the plastic cap when the CPU is not installed.
- Do not force the CPU into the socket; ensure the lever is lifted.
Install Memory
The motherboard has 2 DDR3 DIMM slots supporting up to 32GB of memory.
- Open the clips on both sides of the memory slot.
- Align the notch on the memory module with the notch in the slot.
- Press the memory module down firmly until the clips on both sides lock it into place.
Important Notes:
- It is recommended to use memory modules of the same capacity, brand, speed, and chips for best compatibility.
- Always unplug the power cord before installing memory.
- Memory modules can only be installed in one direction due to foolproof design.
- Dual Channel Technology requires two memory modules installed in the correct slots.
Install Expansion Card
The motherboard features a PCI Express 2.0 x16 expansion slot.
To install an expansion card: Align the card with the PCIe slot and press it down firmly until it is fully inserted and secured.
Important Notes:
- Always turn off the power supply and unplug the power cable before adding or removing expansion cards.
- Incorrect installation may cause short circuits.
Back Panel Connectors
The rear I/O panel provides the following connectivity:
- PS/2 Ports: One for keyboard (purple) and one for mouse (green).
- HDMI Port: Supports 4K and 1080p resolutions for HDMI-compatible monitors.
- VGA Port: Supports analog video signal transmission for displays.
- USB 3.0 Ports: For high-speed USB devices.
- USB 2.0 Ports: For standard USB devices.
- RJ45 LAN Port: Gigabit Ethernet for internet connection (up to 1000Mbps/s).
- Audio Ports: Line-in, Line-out, and Mic-in jacks.
RJ45 LAN Port LED States
| Link/Activity LED Status | Description | Speed LED Status | Description |
|---|---|---|---|
| Off | No Link | Off | 10 Mbps connection |
| Yellow | Linked | Green | 100/1000 Mbps connection |
Internal Connectors
F_PANEL1 Connector
Connects front panel power button, reset button, power LED, and HDD LED.
- +POWER LED-
- +HDD LED-
- +POWER SW-
- +RESET SW-
SPEAK1 Connector
Connects to the system buzzer and speaker.
- Buzzer (+)
- Buzzer (-)
- Speaker (+)
- Speaker (-)
JAUDIO1 Connector
Connects front panel audio jacks.
| Pin | Function | Pin | Function |
|---|---|---|---|
| 1 | MIC L | 2 | Ground |
| 3 | MIC R | 4 | NC |
| 5 | Head Phone R | 6 | MIC Detection |
| 7 | SENSE_SEND | 8 | No Pin |
| 9 | Head Phone L | 10 | Head Phone Detection |
Important: An incorrect connection can prevent the device from working or cause damage.
SATA Connectors
The motherboard provides SATA 3.0 connectors (SATA1~2) supporting 6Gb/s interface and SATA 2.0 connectors (SATA3~4). Each connector supports a single SATA device.
M.2 Slot
Insert your M.2 SSD into the M.2 slot at a 30-degree angle and secure it with the provided screw.
JCMOS1: CMOS Discharge
To reset BIOS settings to default:
- Initial state: Jumper covers pins 1 and 2.
- Discharge: Move the jumper to cover pins 2 and 3 and wait for approximately 3 minutes.
- Restore: After discharge, move the jumper back to cover pins 1 and 2 to restore the initial state.
Important: Always turn off the computer and unplug the power cord before clearing CMOS data.
JCOM1: Serial Port Connector
Provides one serial port via an optional COM port cable.
| Pin | Function | Pin | Function |
|---|---|---|---|
| 1 | DCD | 2 | SIN |
| 3 | SOUT | 4 | DTR |
| 5 | Ground | 6 | DSR |
| 7 | RST | 8 | CTS |
| 9 | RI | 10 | NC |
ATXPWR1, JATXPWR1: Power Connectors
These connectors provide stable power to motherboard components. Ensure the power supply is turned off and devices are installed before connecting.
Important: A power supply of at least 500W is recommended. Insufficient power can lead to system instability.
ATXPWR1 (24-pin) Pinout
| Pin | Voltage | Pin | Voltage |
|---|---|---|---|
| 1 | +3.3V | 13 | +3.3V |
| 2 | +3.3V | 14 | -12V |
| 3 | Ground | 15 | Ground |
| 4 | +5V | 16 | PS-ON |
| 5 | Ground | 17 | Ground |
| 6 | +5V | 18 | Ground |
| 7 | Ground | 19 | Ground |
| 8 | Power OK | 20 | NC |
| 9 | +5VSB | 21 | +5V |
| 10 | +12V | 22 | +5V |
| 11 | +12V | 23 | +5V |
| 12 | +3.3V | 24 | Ground |
JATXPWR1 (8-pin) Pinout
| Pin | Voltage | Pin | Voltage |
|---|---|---|---|
| 1 | Ground | 5 | +12V |
| 2 | Ground | 6 | +12V |
| 3 | Ground | 7 | +12V |
| 4 | Ground | 8 | +12V |
Fan Connectors
CPU_FAN1, SYS_FAN1~3: Fan Connectors
CPU_FAN is a 4-pin connector for CPU radiator fans, supporting PWM speed regulation. SYS_FAN is a 3-pin connector for system/case fans, without PWM adjustment.
CPU_FAN Pinout
| Pin | Function |
|---|---|
| 1 | Ground |
| 2 | +12V |
| 3 | Sense |
| 4 | Speed Control |
SYS_FAN Pinout
| Pin | Function |
|---|---|
| 1 | Ground |
| 2 | +12V |
| 3 | Sense |
JUSB2, JUSB4: USB 2.0 Connectors
These headers conform to USB 2.0 specification for connecting front panel USB 2.0 ports.
| Pin | Function | Pin | Function |
|---|---|---|---|
| 1 | VCC | 2 | VCC |
| 3 | USB0- | 4 | USB1- |
| 5 | USB0+ | 6 | USB1+ |
| 7 | Ground | 8 | Ground |
| 9 | No Pin | 10 | NC |
FUSB3: USB 3.0 Connector
This header conforms to USB 3.0 and USB 2.0 specifications for connecting front panel USB 3.0 ports.
| Pin | Function | Pin | Function |
|---|---|---|---|
| 1 | VBUS | 11 | D2+ |
| 2 | SSRX1- | 12 | D2- |
| 3 | SSRX1+ | 13 | Ground |
| 4 | Ground | 14 | SSTX2+ |
| 5 | SSTX1- | 15 | SSTX2- |
| 6 | SSTX1+ | 16 | Ground |
| 7 | Ground | 17 | SST2+ |
| 8 | D- | 18 | SST2- |
| 9 | D+ | 19 | VBUS |
| 10 | NC | 20 | No Pin |
BIOS Setup
BIOS (Basic Input and Output System) stores hardware parameters and initializes computer hardware. Its functions include Power-On Self-Test (POST), saving system parameters, and loading the operating system. The BIOS Setup program allows modification of system configuration settings.
Important: BIOS flashing is risky. It is recommended not to flash the BIOS unless necessary, and to do so with caution to avoid system malfunction.
BIOS Setup Defaults
Default settings provide optimal performance and system stability. Altering default settings may lead to instability or boot failure.
Important: BIOS items are updated for performance; descriptions are for reference only.
Enter BIOS Setup
During system startup, after the self-test, a message prompts: 'Press DEL key to enter Setup Menu.' Press the 'Delete' key at this time. If the message disappears, restart the computer (using the power button, reset button, or Ctrl+Alt+Delete) and repeatedly press the 'Del' key immediately after starting.
Current Version Screen Description
The BIOS setup utility displays system information, including BIOS vendor (American Megatrends), processor details (e.g., Intel Core i5-4590, 3500 MHz), memory configuration (e.g., 4096 MB DDR3, 1600 MHz), and chipset information (H81). It also provides navigation keys for setup.
Reset BIOS
To restore default BIOS settings:
- Go to BIOS and press F6 to load optimized defaults.
- Short the Clear CMOS jumper on the motherboard.
Important: Ensure the computer is off before clearing CMOS data. Refer to the Clear CMOS jumper section for details.
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