MB AM4 ASRock B450 PRO4 R2.0 ATX

// CPU
- Supports AMD AM4 Socket Ryzen™ 2000, 3000 and 5000 Series Desktop Processors

Chipset
- AMD B450

Memory
- Dual Channel DDR4 Memory Technology
- 4 x DDR4 DIMM Slots
- AMD Ryzen series CPUs support DDR4 3200/2933/2667/2400/2133 ECC & non-ECC, un-buffered memory*
- Max. capacity of system memory: 128GB*

Graphics
- Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU*
- Shared memory default 2GB. Max Shared memory supports up to 16GB.**
- Supports Triple Monitor
- Supports HDMI 1.4 with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz
- Supports DisplayPort 1.2 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz
- Supports D-Sub with max. resolution up to 1920x1200 @ 60Hz

Audio
- 7.1 CH HD Audio with Content Protection (Realtek ALC892/897 Audio Codec)

LAN
- PCIE x1 Gigabit LAN 10/100/1000 Mb/s
- Realtek RTL8111H

Slots
- 2 x PCI Express 3.0 x16 Slots (PCIE2: x16 mode; PCIE4: x4 mode)*
- 4 x PCI Express 2.0 x1 Slots

Storage
- 4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug*
- 2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061, support NCQ, AHCI and Hot Plug
- 1 x Ultra M.2 Socket (M2_1), supports M Key type 2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32 Gb/s)
- 1 x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)**

USB
- 2 x USB 2.0 Ports (Supports ESD Protection)
- 1 x USB 3.2 Gen2 Type-A Port (10 Gb/s) (Supports ESD Protection)
- 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s) (Supports ESD Protection)
- 4 x USB 3.2 Gen1 Ports (Supports ESD Protection)
- 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
- 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)

https://www.asrock.com/mb/AMD/B450%20Pro4%20R2.0/index.asp#Overview