MB AM4 ASRock B450 STEEL LEGEND ATX

// CPU
- AMD AM4 Socket

Chipset
- AMD B450

Memory
- Dual Channel DDR4 Memory Technology
- 4 x DDR4 DIMM Slots
- AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4 3533+(OC) / 3200(OC) / 2933(OC) / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
- Max. capacity of system memory: 64GB**

Graphics
- Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU*
- Shared memory default 2GB. Max Shared memory supports up to 16GB.**
- Dual graphics output:
- 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

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

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

Slots
AMD Ryzen series CPUs (Matisse, Summit Ridge and Pinnacle Ridge)
- 2 x PCI Express 3.0 x16 Slots (PCIE1: 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 2230/2242/2260/2280 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
- 1 x USB 3.1 Gen2 Type-A Port (10 Gb/s)
- 1 x USB 3.1 Gen2 Type-C Port (10 Gb/s)
- 6 x USB 3.1 Gen1 Ports
- 6 x USB 2.0 Ports

https://www.asrock.com/mb/amd/b450%20steel%20legend/index.asp#Overview