Asrock B550 Taichi, AM4, AMD B550, 90-MXBD00-A0UAYZ

shape factor ATX
chipset AMD B550
CPU-Compatibility Ryzen 4000G, Ryzen 3000, without TDP limitation (Manufacturer-list)
VRM 16 virtual phases (14+2), 8 real phases (7+1), PWM-Controller: RAA 229004 (max. 8 phases)
MOSFETs CPU 14x 50A SiC654
MOSFETs SoC 2x 50A SiC654
RAM 4x DDR4 DIMM, dual PC4-41600U/DDR4-5200 (OC), max. 128GB (UDIMM)
Extension slots 2x PCIe 4.0 x16 (1x x16, 1x x8), 1x PCIe 3.0 x16 (x4), 2x PCIe 3.0 x1, 1x M.2/M-Key (PCIe 4.0 x4, 2280/2260/2242), 1x M.2/M-Key (PCIe 3.0 x4/SATA, 22110/2280/2260/2242), 1x M.2/E-Key (PCIe, 2230, occupied with WiFi+BT module)
external connectors 1x HDMI 2.1 (iGPU), 1x DisplayPort 1.4 (iGPU), 1x USB-C 3.1 (B550), 1x USB-A 3.1 (B550), 4x USB-A 3.0, 2x USB-A 2.0, 1x 2.5GBase-T (Intel I225-V), 5x jack, 1x toslink
Internal connectors 1x USB-C 3.1 Key-A Header (B550), 2x USB 3.0 Header (4x USB 3.0), 2x USB 2.0 header (4x USB 2.0), 4x SATA 6Gb/s (B550), 4x SATA 6Gb/s (ASM1061), 1x TPM-Header, 1x Speaker-Header
Header Cooling 1x CPU fan 4-Pin, 1x CPU fan/pump 4-Pin, 5x fan/pump 4-Pin
Header Lighting 2x 4-Pin RGB (+12V/?G/?R/?B, max. 3A), 2x 3-Pin ARGB (+5V/?DATA/GND, max. 3A)
buttons/Switches Power-Button (internal), Reset-Button (internal), clear-CMOS-Button (internal), clear-CMOS-Button (external), USB BIOS Flashback (external)
Audio 7.1 (Realtek ALC1220)
onboard-Graphics iGPU
Wireless WLAN 802.11a/b/g/n/ac/ax (2x2, Intel AX200), Bluetooth 5.1
RAID level 0/1/10 (B550)
Multi-GPU AMD 3-Way-CrossFireX (x8/x8, x8/x8/x4)
Power connections 1x 24-Pin ATX, 2x 8-Pin EPS12V
Lighting RGB, 3 zones (chipset cooler, I/O cover, page right)
BIOS 1x 32MB (256Mb)
Special features audio+solid capacitors, Diagnostic LED (segment indication), I/O-shield integrated, Backplate, 2x M.2-passive cooler