Product Model: PE34EProduct Name: PCIe 4.0 x4 to NVMe EDSFF 1U short E1.S AdapterInterface: 1*EDSFFSupport: 1*NVMe SSDHost Bus Type: PCIe 4.0 x4Allows a latest generation EDSFF E1. S PCIe 4.0 SSD to be mounted on a PCIe port. PCIe gen 4.0 x4 controller card (compatible ports 4x, 8x, 16x) Support PCIe GEN3/4 mainboard, compatible with PCIE Gen2 and Gen1 backwards. It is recommended to install this adapter card in PCIE Gen3 or higher motherboard slot for better transmission performance. The mainboard can be used as a system disk or data disk. If you use the mainboard as a system disk, select a mainboard that supports NVMe startup. Socket EDSFF E1.S 110mm on the board, with fixing screws Card supplied with High profile and Low profile brackets