PCIe 4.0/3.0 x16 interface, compatible with PCIe x8 and x16 slots, support data transfer rates up to 256 Gbps.

Up to 4 x M.2 slots (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0/3.0)*
* Supports PCIe M.2 storage devices only. Maximum SSDs support will vary, depends on different motherboard´s design.

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

AMD TRX40/X570 Series Motherboard models with PCIe 4.0 support
Supports PCIe 3.0 bandwidth for other RAID on CPU models.

Maximum numbers of M.2 SSD support will vary, depending on different CPU specs and PCIe bifurcation settings in different ASUS motherboards.
Please see the FAQ link for full compatible lists and further information:
https://www.asus.com/support/FAQ/1037507

27 (L)*12.2(W) *1.5(H)cm