Quick overview from the supplier:
MB AM4 Gigabyte B550M S2H 1.0 mATX
// CPU
AMD Socket AM4, support for: 3rd Generation AMD Ryzen™ processors/ 3rd Generation AMD Ryzen™ with Radeon™ Graphics processors
Chipset
AMD B550
2 x DDR4 DIMM sockets supporting up to 64 GB (32 GB single DIMM capacity) of system memory
Support for DDR4 5000(O.C.) / 4866(O.C.) / 4600(O.C.) / 4400(O.C.) / 4000(O.C.) / 3600(O.C.) / 3333(O.C.) /3200/2933/2667/2400/2133 MHz memory modules
Dual channel memory architecture
Onboard Graphics
Integrated in the 3rd Generation AMD Ryzen™ with Radeon™ Graphics processors:
1 x D-Sub port, supporting a maximum resolution of 1920x1200@60 Hz
1 x DVI-D port, supporting a maximum resolution of 1920x1200@60 Hz
1 x HDMI port, supporting a maximum resolution of 4096x2160@60 Hz
Support for up to 3 displays at the same time
Maximum shared memory of 16 GB
Audio
Realtek® ALC887 codec
LAN
Realtek® GbE LAN chip (1000 Mbit/100 Mbit)
Expansion Slots
1 x PCI Express x16 slot, integrated in the CPU:
3rd Generation AMD Ryzen™ processors support PCIe 4.0 x16 mode
2 x PCI Express x1 slots (PCIEX1_1, PCIEX1_2), integrated in the Chipset:
Supporting PCIe 3.0 x1 mode
Storage Interface
1 x M.2 connector, integrated in the CPU, supporting Socket 3, M key, type 2242/2260/2280 SSDs:
3rd Generation AMD Ryzen™ processors support SATA and PCIe 4.0 x4/x2 SSDs
3rd Generation AMD Ryzen™ with Radeon™ Graphics processors support SATA and PCIe 3.0 x4/x2 SSDs
4 x SATA 6Gb/s connectors, integrated in the Chipset:
Support for RAID 0, RAID 1, and RAID 10
USB
4 x USB 3.2 Gen 1 ports on the back panel
2 x USB 3.2 Gen 1 ports available through the internal USB headers
4 x USB 2.0/1.1 ports (2 ports on the back panel, 2 ports available through the internal USB headers)
https://www.gigabyte.com/Motherboard/B550M-S2H-rev-10#kf
