ASUS Prime B550M-A WI-FI II, AMD B550, AM4, 90MB19X0-M0EAY0

shape factor µATX
Socket AMD AM4
chipset AMD B550
CPU-Compatibility Ryzen 5000G, Ryzen 5000, Ryzen 4000G, Ryzen 3000, without TDP limitation (Manufacturer-list)
RAM 4x DDR4 DIMM, dual PC4-38933U/DDR4-4866 (OC), max. 128GB (UDIMM)
Extension slots 1x PCIe 4.0 x16, 2x PCIe 3.0 x1, 1x M.2/M-Key (PCIe 4.0 x4/SATA, 22110/2280/2260/2242), 1x M.2/M-Key (PCIe 3.0 x4/SATA, 2280/2260/2242)
external connectors 1x VGA (iGPU), 1x DVI-D (iGPU), 1x HDMI 2.1 (iGPU), 2x USB-A 3.1 (10Gb/s, B550), 4x USB-A 3.0 (5Gb/s), 1x Gb LAN (Realtek RTL8111H), 3x jack, 1x PS/2 Combo
Internal connectors 1x USB 3.0 Header (5Gb/s, 2x USB 3.0), 2x USB 2.0 header (480Mb/s, 4x USB 2.0), 4x SATA 6Gb/s (B550), 1x serial, 1x TPM-Header, 1x S/PDIF-Header, 1x Speaker-Header, 1x COM Debug-Header
Header Cooling 2x CPU fan 4-Pin, 2x fan 4-Pin
Header Lighting 2x 4-Pin RGB (+12V/G/R/B, max. 3A), 1x 3-Pin ARGB (+5V/DATA/GND, max. 3A, ASUS Gen2)
buttons/Switches not available
Audio 7.1 (Realtek ALC887)
Graphics iGPU
Wireless Wi-Fi 6 (WLAN 802.11a/b/g/n/ac/ax, 2x2), Bluetooth 5.2
RAID level 0/1/10 (B550)
Multi-GPU not available
Power connections 1x 24-Pin ATX, 1x 8-Pin EPS12V
VRM 8 virtual phases (4+4), 6 real phases (4+2), PWM-Controller: uP9505P (max. 6 phases)
MOSFETs CPU 4x 58A SiRA14DP/8x SiRA12DP
MOSFETs SoC 4x 58A SiRA14DP/SiRA12DP
Lighting orange, 1 zone (Audio Trace Path)
BIOS 1x 32MB (256Mb)
Special features audio+solid capacitors, ECC-support, onboard TPM 2.0 support (AMD fTPM, additional Manufacturer link pay attention)