CPU : AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors
Chipset : AMD B550
Memory :
AMD RyzenTM 4000 G-Series Processors
4 x DIMM, Max. 128GB, DDR4 5100(O.C)/4800(O.C.)/4600(O.C)/4400(O.C)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory
4 x DIMM, Max. 128GB, DDR4 4600(O.C)/4400(O.C)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory
OptiMem II
Dual Channel Memory Architecture
ECC Memory (ECC mode) support varies by CPU.

Expansion Slots :
AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors
AMD B550 Chipset
1 x PCIe 3.0 x16 (x4 mode) *
3 x PCIe 3.0 x1
1 x PCIe 4.0 x16 (x16 mode)
1 x PCIe 3.0 x16 (x16 mode)

USB Ports :
Front USB Port ( Total 6 )
Rear USB Port ( Total 8 )
4 x USB 3.2 Gen 1 port(s)(4 x Type-A)
2 x USB 3.2 Gen 2 port(s)(1 x Type-A +1 x USB Type-C®)
2 x USB 3.2 Gen 1 port(s)
2 x USB 2.0 port(s)
4 x USB 2.0 port(s)

Back I/O Ports:
1 x BIOS FlashBack™ Button(s)
2 x USB 3.2 Gen 2 (1 x Type-A+1 x USB Type-C®)
1 x Intel® I225-V 2.5Gb Ethernet
4 x USB 3.2 Gen 1
1 x DisplayPort
1 x HDMI
2 x USB 2.0
1 x Optical S/PDIF out
5 x Gold-plated audio jacks

Operating System : Windows® 10 64-bit
Form Factor : ATX Form Factor
12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )