Features 1、Compatibility: M. 2 PCI‑E4.0 to SFF8643‑U2, supporting PCI‑E4.0, downward compatible with 3.0 2、High Transmission Speed: Supports PCI‑E4.0, is compatible with PCI‑E3.0, and the maximum theoretical transmission rate is 64GT / S 3、Stable Performance: Stable performance, strong compatibility, high speed loss less transmission 4、Standard M.2 2280 : The standard M.2 2280 size, retains the grain at 2260 position. It is designed as a cutting type to effectively ensure the strength when using 2280 5、Call Transfer: M.2 NVME to SFF‑8643 interface and need to be used with U2 cable , the motherboard supports nvme protocol. It can be used with PH49‑M2+PH41‑1U, and can support PCIE slots Specification Item Type: Adapter Expansion Card Material: PCB Applicable: M.2NVME Protocol Extension Interface: SFF-8643 Product Size: Approx. 80 x 22mm / 3.1 x 0.9in(Length x Width) Package List 1 x Adapter Expansion Card 1 x Screw 1 x Screwdriver