PCI Express 3.0 x16 interface, compatible with PCI Express x8 and x16 slots, support data transfer rates up to 128 Gbps.

4 x M.2 Socket 3 with M Key design, type 2242/2260/2280/22110 storage devices support(Support PCIE SSD only)

1 x M.2 FAN Power Switch
4 x M.2 access LEDs

4 x M.2 Skrews packages

ROG RAMPAGE VI EXTREME
ROG RAMPAGE VI APEX
ROG STRIX X299-XE GAMING
ROG STRIX X299-E GAMING
PRIME X299-DELUXE
PRIME X299-A
TUF X299 MARK 1
TUF X299 MARK 2

20.2(L) * 9.6(W) *1.3(H)cm