Introduction
This manual provides detailed instructions for the installation, configuration, and troubleshooting of your MACHINIST B450M-AM4-K ADM Motherboard. Please read this manual thoroughly before proceeding with installation to ensure proper setup and operation.
Specifications
The MACHINIST B450M-AM4-K Motherboard is designed to support AMD Ryzen processors and DDR4 memory, offering a robust platform for various computing needs.
| Feature | Description |
|---|---|
| Processor Support | AMD Ryzen 1st, 2nd, 3rd, 4th, and 5th Gen CPU / AMD 7th Gen A-Series APU / AMD Athlon X4 Desktop CPU Processors on Socket AM4 |
| Chipset | AMD B450 |
| Memory | 4 x DDR4 DIMM slots, Dual Channel, non-ECC, unbuffered desktop RAM. Max. 128GB (32GB*4). Supports 2133/2400/2666/2800/2933/3000/3200/3600MHz (CPU-dependent). |
| Storage Interface | 4 x SATA 3.0 (6Gb/s) connectors. 2 x NVMe M.2 Socket (PCIe 3.0 x4, PCIe 2.0 x4), 1 x WiFi M.2 Socket (NGFF Protocol). |
| PCIe Expansion | 1 x PCIe 3.0 x16 slot, 1 x PCIe 2.0 x1 slot. |
| Display Interface | 1 x VGA, 1 x DisplayPort, 1 x HDMI-compatible. |
| Back I/O Ports | 1 x PS/2 keyboard/mouse, 2 x USB 3.0, 4 x USB 2.0, 1 x RJ45 LAN, 3 x Audio Jacks (Line-in, Line-out, Mic-in). |
| Onboard Connectors | 1 x USB 3.0 header, 2 x USB 2.0 headers, 1 x Front Audio header, 1 x 24-pin ATX Power, 1 x 8-pin CPU Power, 1 x 4-pin PWM CPU Fan, 1 x 3-pin SYS Fan, 1 x COM header, 1 x 2-pin Clear CMOS button, 1 x 9-pin Debug interface, 1 x 4-pin Speaker/Buzzer header, 1 x System Panel header. |
| Network | Realtek 8111H Gigabit Network Card. |
| Audio | Realtek ALC897 High-Definition Sound Card. |
| Power Supply | 4+2 direct-phase power supply (PWM controller: RT8878B). |
| Form Factor | Micro-ATX (235mm x 215mm). |
| BIOS Features | TPM 2.0, Secure Boot, Hibernation, XMP, PBO, CPU overclocking, Chinese/English switching, Wake-on-LAN, automatic boot on incoming call, diskless boot, fan speed control. |
| Operating Environment | Temperature: 0~50°C, Humidity: 5%~95%. |
| Storage Environment | Temperature: -20~70°C, Humidity: 5%~95%. |
Setup & Installation
Package Contents
- B450M AM4-K Motherboard x 1
- SATA Cable x 1
- I/O Shield x 1
Motherboard Layout
Refer to the diagram below for an overview of the motherboard's components and connectors.
Figure 1: Motherboard Layout and Connectors
CPU & Fan Installation
Important Safety Note: Always unplug the power cord from the power outlet before installing or removing the CPU to prevent hardware damage.
- Press the lever on the CPU socket with your hand and lift it up.
- Lift the CPU slot buckle cover and remove the black protective cover.
- Align the CPU base with the card slot on top of the CPU. After confirming it is correct, lower the CPU carefully and place it in place.
- After installation, put down the CPU slot buckle cover and snap back the lever.
Figure 2: CPU Installation Diagram
Warning: Do not touch the motherboard interface pins. Do not touch the CPU pins to contact the core.
Figure 3: CPU Pin Warning (Abnormal vs. Normal Socket)
Ensure the CPU cooler is installed and properly sealed with thermal paste before powering on the system to prevent overheating.
Memory Installation
Important: Always turn off the computer and unplug the power cord before installing memory.
- Wrench the latches on both sides of the memory slot outwards.
- Insert the memory into the slot by aligning it with the notch.
- Flip the latches on both sides of the slot to lock the memory.
Figure 4: Memory Installation and Dual Channel Slots
Expansion Card Installation
Important: Turn off the power supply and unplug the power cable before adding or removing expansion cards.
The motherboard provides one PCI Express 3.0 x16 and one PCI Express 2.0 x1 expansion slot. Insert the expansion card into an available slot and press firmly until it is fully seated.
Figure 5: PCIe Expansion Slots
Storage Devices (SATA & M.2)
The motherboard supports SATA 3.0 devices and NVMe M.2 SSDs.
SATA Ports
Connect your SATA 2.5-inch SSDs or 3.5-inch mechanical hard drives to the SATA 3.0 (6Gb/s) connectors (SATA1-SATA4).
M.2 SSD Installation
- Insert your M.2 SSD into the M.2 slot at a 30-degree angle.
- Secure the M.2 SSD in place with the provided screw.
WIFI M.2 Slot
The M.2 WiFi interface is compatible with WiFi AC standard expansion cards. Install the WiFi M.2 module and load the corresponding driver.
Power Connectors (ATXPWR)
Important: Ensure the power supply is turned off and all devices are properly installed before plugging in power connectors.
Connect the 24-pin main power connector and the 8-pin CPU power connector from your power supply to the corresponding headers on the motherboard. Ensure your power supply can provide sufficient power for all components.
Front Panel Connectors
Connect your chassis's front panel cables to the following headers:
F_PANEL1 Connector (System Panel)
This header is for connecting the power LED, HDD LED, power switch, and reset switch from your chassis.
Figure 6: F_PANEL1 Connector Pinout (Refer to the detailed image for specific pin assignments)
SPK1 Connector (Speaker/Buzzer)
Connect the chassis speaker/buzzer to this header.
F_AUDIO1 Connector (Front Audio)
Connect your chassis's front audio jacks (headphone and microphone) to this header.
USB Connectors (F_USB20_1, F_USB20_2, JUSB30_1)
Connect your chassis's front USB ports to these headers. F_USB20 headers are for USB 2.0, and JUSB30_1 is for USB 3.0.
Fan Connectors (CPU_FAN1, SYS_FAN1)
Connect your CPU fan to CPU_FAN1 (4-pin) and system fans to SYS_FAN1 (4-pin). Note that 4-pin fans support PWM speed regulation.
Back Panel I/O Ports
The rear I/O panel provides various ports for connecting peripherals:
Figure 7: Rear I/O Panel
- PS/2 Port: For connecting a PS/2 keyboard or mouse.
- USB 2.0 Ports: Four ports for USB 2.0 devices (480Mbps).
- USB 3.0 Ports: Two ports for USB 3.0 devices (5Gbps).
- HDMI Port: Supports hot-swapping and audio/video transmission up to 4K.
- VGA Port: For analog video signal transmission.
- DisplayPort: Supports high-bandwidth, high-resolution video and audio output.
- RJ45 LAN Port: Provides Gigabit Ethernet connection (up to 1000Mbps).
- Audio Jacks: Three jacks for Line-in, Line-out, and Microphone.
BIOS Configuration
Boot Mode Option (UEFI and Legacy)
UEFI (Unified Extensible Firmware Interface) generally offers faster boot speeds, supports larger hard drive capacities (GPT partition tables), and provides better security features like Secure Boot. It also features a graphical user interface for easier management.
Legacy BIOS is suitable for older hardware or specific software that may not be compatible with UEFI. When choosing a boot mode, prioritize UEFI for modern systems unless specific compatibility issues arise.
Note: If using an NVMe hard drive, UEFI boot system (Windows 10) is recommended. Some older motherboards or Windows 7 systems may lack NVMe drivers in legacy boot, preventing drive recognition.
Entering BIOS Setup
When the computer is turned on, press the DEL key repeatedly to enter the BIOS Setup Menu. Alternatively, use the 'Quick Boot Key' F11 to access boot options.
BIOS Settings Overview
The BIOS (Basic Input and Output System) manages hardware parameters and initiates the operating system. Key features include:
- TPM 2.0 Support
- Secure Boot Support
- Hibernation Support
- Diskless Booting Support
- CPU Overclocking Support
- Wake on LAN (WOL) Support
- PWRON After PWR-Fail Support
- Language BIOS: Chinese/English
- Precision Boost Overdrive (PBO) Support
- Memory Timing Modification (X.M.P) Support
- Fan Speed Modification: Support 4-pin fan only
Important: BIOS flashing is potentially risky. Only flash the BIOS if necessary and with caution, as inadequate flashing can lead to system malfunction. Default BIOS settings are recommended for optimal system stability.
Resetting BIOS
To restore default BIOS settings:
- Clear CMOS using the jumper: Power off the system. Locate the JCMOS1 jumper (two pins) on the motherboard. Short the two pins with a conductive item (screwdriver, tweezers) for 3-5 seconds.
- Clear CMOS by removing the CMOS battery: Turn off all peripheral devices and disconnect the power cord. Find the CMOS battery (CR2032) on the mainboard. Remove the battery, wait 1-5 minutes, then reinsert it. Reconnect power and devices.
Important: Always ensure the computer is off before clearing CMOS data.
Maintenance
Clear CMOS
As described in the BIOS Configuration section, clearing the CMOS can resolve certain system issues by resetting BIOS settings to their defaults. Follow the steps provided in the 'Resetting BIOS' subsection.
Troubleshooting (FAQ)
Can't Boot (No response, fan not rotating, no indicator light)
- Clear the CMOS jumper.
- Check CPU compatibility with the motherboard.
- Verify motherboard and CPU power supply connections, and ensure the case power switch is on.
- Check if the system panel power-on cable is properly plugged in.
- Ensure the power supply is in good condition.
- Remove graphics card, hard disk, USB, and other devices, then attempt to boot.
- Replace with a different CPU to test.
Start-up and then Shutdown (Fan rotates once then stops)
- Clear the CMOS jumper.
- Check if the CPU model used is compatible.
- Troubleshoot or replace if the CPU is damaged.
- Replace other memory modules.
- Remove the graphics card, hard drive, and USB device, then test again.
Computer Keeps Restarting (Endless reboot loop)
- Clear the CMOS jumper.
- Check CPU compatibility with the motherboard.
- Test with a different CPU.
- Replace the RAM and check for compatibility.
- Remove the graphics card, hard disk, USB, and other devices, then test again.
No Display
State 1: Fan rotating, Caps Lock key not responding.
- Clear the CMOS jumper.
- Check motherboard and CPU power supply connections.
- Verify memory stick installation in correct slots.
- Check CPU and memory model compatibility.
- Replace with a different CPU.
- Replace other memory modules.
State 2: Fan rotating, Caps Lock key responding.
- Check if the monitor is turned on.
- Check if the monitor display cable (DP, HDMI, DVI, VGA) is plugged in.
- If no graphics card is present, ensure your CPU has integrated graphics. If not, a video graphics card is needed.
- Verify display data cable is connected to the correct display interface (motherboard's if no discrete GPU, discrete GPU's if present).
- Replace the data cable connected to the monitor.
- Replace with a new graphics card to test.
Blue Screen or Crash
- Check motherboard's heat dissipation (CPU fan working, cooler tightly fitted, thermal paste applied).
- Replace with a new CPU.
- Replace with new memory.
- Replace with a new hard disk.
- Reinstall the operating system.
- Replace with a new power supply.
- Test with a different graphics card.
Internal Ports Error Connection
Some motherboards have an LPC connector (J_LPC) that can be mistaken for a USB 2.0 connector. Incorrectly connecting a USB device to an LPC header can cause boot failures, blue screens, or repeated reboots. Always check the labels carefully.
User Tips
- BIOS Settings: If you encounter boot issues, try disabling CSM (Compatibility Support Module) in the BIOS.
- Power Supply: Ensure your power supply is at least 500W to adequately support the motherboard and connected components.
- CPU Compatibility: Always double-check CPU compatibility, especially for Ryzen 5000 series processors, as some users have reported specific issues with certain models.
- Memory Installation: For optimal performance and dual-channel operation, install memory modules of the same capacity, brand, speed, and chips. When installing two modules, ensure they are placed in the black slots. If installing only one module, use the outermost black slot.
- NVMe Drives: For systems utilizing NVMe SSDs, it is highly recommended to use UEFI boot mode, especially with Windows 10, to ensure proper recognition and performance.
- Pre-Installation Check: Before installing the CPU, carefully inspect the socket for any bent or broken pins. If any are found, contact support before proceeding.
- CPU Cooler: Always ensure the CPU cooler is properly installed and making good contact with the CPU (with thermal paste applied) before powering on the system to prevent overheating and damage.
- Connector Awareness: Pay close attention to the labels on all internal connectors (e.g., front panel, USB headers) to avoid incorrect connections that could damage components.
Support & Documentation
For further detailed information, diagrams, or if you encounter any problems not covered in this manual, please refer to the complete user manual PDF:
If you have any problems, please feel free to contact us.
