Mainboard MSI B450M-A PRO MAX (AMD B450 / Socket AM4 / m-ATX / DDR4 x 2)

MSI

9.3 inch x 7.9 inch (23.6 cm x 20.0 cm)
m-ATX (Mirco-ATX)

2 x DDR4 memory slots (up to 64GB) (ComboPI 1.0.0.3-based and above BIOS are required)
Dual channel memory architecture
Support non-ECC UDIMM memory
Supports 1866 / 2133 / 2400 / 2667 Mhz (by JEDEC) (For AMD Ryzen Gen3 (R5 / R7 / R9)
Supports 2667 / 2800 / 2933 / 3000 / 3066 / 3200 / 3466 / 3733 / 3866 / 4000 / 4133 MHz (by A-XMP OC MODE)
Supports 2667 / 2800 / 2933 / 3000 / 3066 / 3200 / 3466 MHz (by A-XMP OC MODE)
Supports ECC UDIMM memory (non-ECC mode)

1 x M.2 slot (Key M) (Supports 2242 / 2280 / 22110 storage devices)
4 x SATA 6Gb/s ports (Supports RAID 0, RAID1 and RAID 10)
Supports PCIe 3.0 x2 (AMD Athlon™ with Radeon™ Vega Graphics, A-series and Athlon™ X4)
Supports PCIe 3.0 x4 (1st, 2nd and 3rd Gen AMD Ryzen™/ Ryzen™ with Radeon™ Vega Graphics and 2nd Gen AMD Ryzen™ with Radeon™ Graphics)

1 x DVI-D port
1 x HDMI
1 x LAN port
1 x PS/2
2 x USB 2.0 Port
3 x HD Audio Connectors
4 x USB 3.2 Gen1

6 x USB 2.0 (High-speed USB) ports (2 ports on the back panel, 4 ports available through the internal USB connectors)
6 x USB 3.2 Gen1 (SuperSpeed USB) ports (4 ports on the back panel, 2 ports available through the internal USB connector)

Realtek® ALC892 / ALC897 Codec (7.1-Channel High Definition Audio)

6 mounting holes