Quick overview from the supplier:
MB AM4 Asus TUF GAMING B550-PLUS ATX
// CPU
AMD AM4 Socket 3rd Gen AMD Ryzen™ Processors
Chipset
AMD B550
Memory
4 x DIMM, Max. 128GB, DDR4 4600(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory *
Dual Channel Memory Architecture
Graphic
1 x DisplayPort 1.4 **
1 x HDMI 2.1(4K@60HZ)
Multi-GPU Support
Supports AMD 2-Way CrossFireX Technology
Expansion Slots
1 x PCIe 4.0 x16 (x16 mode)
1 x PCIe 3.0 x16 (x4 mode)
3 x PCIe 3.0 x1 *1
Storage
1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support(SATA & PCIe 4.0 x4 mode)
1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)*2
6 x SATA 6Gb/s port(s),
Support Raid 0, 1, 10
LAN
Realtek RTL8125B 2.5Gb Ethernet
Wireless Data Network
M.2 slot only (Key E) (Support PCIe interface)*
Audio
Realtek ALC S1200A 7.1 Surround Sound High Definition Audio CODEC
USB Ports
Rear USB Port ( Total 8 )
2 x USB 3.2 Gen 2 port(s)(1 x Type-A +1 x USB Type-C®)
4 x USB 3.2 Gen 1 port(s)( x Type-A)
2 x USB 2.0 port(s)( x Type-A)
Front USB Port ( Total 6 )
2 x USB 3.2 Gen 1 port(s)(2 x Type-A)
4 x USB 2.0 port(s)(4 x Type-A)
https://www.asus.com/Motherboards/TUF-GAMING-B550-PLUS/overview/
