MEMORY
2x DDR4 memory slots, support up to 64GB 1
Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz by JEDEC
Supports DDR4 2667/ 2800 /2933 /3000 /3066 /3200 /3466 /3600/ 3733 /3866 /4000 /4133 /4266 /4400/ 4600+ MHz by A-XMP OC MODE
1DPC 1R max speed 4600 MHz
1DPC 2R max speed 3866 MHz
Dual channel memory architecture
Supports non-ECC UDIMM memory
Supports ECC UDIMM memory (non-ECC mode)
Supports un-buffered memory
EXPANSION SLOT
1x PCIe x16 slot (PCI_E2)
B550M PRO supports PCIe 4.0/3.0 1
2x PCIe 3.0 x1 slots
ONBOARD GRAPHICS
1x VGA port, supports a maximum resolution of 2048x1536@50Hz, 2048x1280@60Hz, 1920x1200@60Hz2
1x HDMI2.1, supports a maximum resolution of 4096x2160@60Hz 12
1x DisplayPort, supports a maximum resolution of 4096x2160 @60Hz2
Maximum shared memory of 16GB
STORAGE
AMD B550 Chipset
4x SATA 6Gb/s ports
1x M.2 slot (Key M) (from AMD Processor)
B550M PRO Supports PCIe 4.0/ 3.0 x4 1
Supports SATA 6Gb/s
Supports 2242/ 2260/ 2280 storage devices
USB
AMD B550 Chipset
2x USB 3.2 Gen 1 5Gbps ports (2 ports are available through the internal USB 3.2 Gen 1 5Gbps connector)
6x USB 2.0 ports (2 Type-A ports on the back panel, 4 ports through the internal USB 2.0 connectors)
AMD Processor
4x USB 3.2 Gen 1 5Gbps Type-A ports on the back panel
AUDIO
Realtek ALC892/ALC897 Codec
7.1-Channel High Definition Audio
LAN
1x Realtek RTL8111H LAN controller