Specifications:
Brand: MACHINIST
Model: B450M-AM4-K
Processor: AM4 socket, supports 1st, 2nd, 3rd, 4th, and 5th Gen AMD Ryzen CPU / 7th Gen A-Series APU / AMD Athlon X4 Desktop CPU Processors on Socket AM4, like Ryzen 1000 series, Ryzen 2000 series, Ryzen 3000 series, Ryzen 4000 series, Ryzen 5000 series, AMD A8 9600/A10 9700/A12 9800; AMD Athlon X4 940/940/970, and Athlon 3000G/Gold 3150G series CPU Processor etc.
Chip: AMD B450 Chipset
Maximum memory capacity: 4 x DDR4 DIMM RAM ( MAX. 128GB )
Memory Type: DDR4 3600 (O.C.) /3200 (O.C.) /3000 (O.C.)/2933/2800/2666/2400/2133 MHz 
Dual channel memory architecture, support desktop, non-ECC, unbuffered memory
The actual memory frequency support depends on the processor type, and please install them all in the black slot when using one or two rams.
Supports SATA 2.5-inch solid-state drive, SATA 3.5-inch mechanical hard drive, and dual NVMe M.2 solid-state drive ( PCIe 3.0 x4, the highest measured read/write speed is up to 3600M/S.)
The power socket has a 4-pin, 24-pin power connector.
Equipped with 4 x SATA 3.0, 6 x USB 2.0, 3 x USB 3.0, 1 x DP, HDMI, and VGA interface, 1 x RJ45, 3 x audio interfaces, 2 x NVMe M.2 slots, 2 WIFI M.2 Slot.
Expansion Slot: 1 x PCIe 3.0 x16 slot, 1 x PCIe 2.0 x1 slot
Sound card model: ALC897, 5.1 channel
Network card model: Realtek 8111H, Gigabit
Compatible Devices: Personal Computer,Server, Keyboard, Mouse, Printer, Projector，Microphone, Monitor, Video Card, etc.
Suitable For: Casual Computing, Graphic Design, Gaming
Platform: Windows 8, Windows 10, Windows 11, Linux
Power Supply: micro atx motherboard amd adopts 4 + 2 phase power supply
Quick Boot Key: F11, turn the AM4 motherboard on and press the F11 key continuously.
Enter BIOS: Turn the motherboard on, and press the main "DEL" key continuously.
Size: 235*215*35 mm
Form Factor: mATX

BIOS Settings:
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

Storage Device Slot:
Support 4 x SATA 6Gb/s ports and 2 x M.2 slots,
Dual M.2 Socket, with M Key, type 2242/2260/2280 storage devices support (PCIE mode)
Applicable Hard Disk: Supports 2.5-inch SATA SSD, 3.5-inch HDD, and dual NVMe (PCIe) M.2 SSD.
The upper M.2 slot is PCIe 3.0 x4 standard, supports PCIe (NVMe) only, and the fastest speed is 3700M/S.
The bottom M.2 slot is PCIe 2.0 x4 standard,supports PCIe (NVMe) only, and the fastest speed is 831M/S.

LAN Connectivity and Audio:
Realtek 8111H Gigabit LAN controller; Realtek ALC897 High Definition Audio CODEC
M.2 WiFi interface supports PCIe (NGFF) protocol wireless network card only, doesn't support the CNVI protocol.

USB Port:
3 x USB 3.0 port(s), 6 x USB 2.0 port(s) (6 at back panel, 3 at mid-board)

Back I/O Port:
1 x PS/2 keyboard/mouse port
1 x Gigabit LAN(RJ45) port
2 x USB 3.0 (blue) interfaces
4 x USB 2.0 interfaces
3 x Audio jack(s)
1 x DisplayPort
1 x VGA interface
1 x HDMI-compatible interface

Internal I/O Port:
1 x USB 3.0 connector
2 x USB 2.0 connectors
2 x M.2 slots (NVMe Protocol)
1 x Wi-Fi M.2 slot (PCIe/NGFF Protocol)
4 x SATA 6 Gb/s connectors
1 x 4-pin PWM CPU Fan header
1 x 4-pin PWM Chassis Fan header
1 x 3-pin Chassis Fan header
1 x Front Panel Audio header
1 x 24-pin EATX Power connector
1 x 8-pin ATX 12V Power connector
1 x Front Panel connector
1 x 4-pin Speaker/Buzzer header
1 x 2-pin Clear CMOS header
1 x COM Port header
1 x Debug interface

CPU and System Fan:
Please navigate to the menu of Fan Settings options to adjust the fan speed in the BIOS page.
CPU_FAN: 4-pin CPU fan header support intelligent temperature control
SYS_FAN1: 4-pin Chassis fan header doesn't support temperature control
SYS_FAN: 3-pin Chassis fan header doesn't support temperature control

How to Clear CMOS:
Power off remove all parts, and use tweezers or other metal conductive objects, short 2-pin header (CLR_CMOS) for 3-5 seconds.

Package Content:
1 x Machinist AMD B450M AM4-K motherboard DDR4
1 x SATA cable
1 x I/O shield

Note:
(1) Socket backplane color may vary from lot to lot, but will not affect the use of the product. Products are continuously optimized and upgraded.
(2) Please allow a 1-3mm difference due to manual measurement.
(3) Due to different monitors and different lighting, the pictures may not show the actual color of the goods. thank you for understanding.
(4) The power supply using depends on your CPU, RAM, GPU, Fan and other parts power consumption. Make sure your power supply is sufficient for this scenario. (The motherboard consumption is about 40-70W)
(5) The battery in the photo of the motherboard is not included, it will be taken out before shipment, because the battery is prohibited according to the logistics requirements.