1 x M.2_1 socket 3 with M Key Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support 1 x M.2_1 socket 3 with M Key Type 2242/2260/2280/22110(PCIE 3.0 x4 and SATA modes) storage devices support 2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A) 4 x USB 3.2 Gen 1 (blue) Type-A 1 x DVI-D 1 x D-Sub 1 x HDMI https://www.asus.com/motherboards-components/motherboards/prime/prime-b550m-k/
