Welcome to our store 1. Compatibility: M.2 PCIE4.0 to SFF8643U2, supports PCIE4.0, backward compatible with 3.0 2. High Transfer Rate: Supports PCIE4.0 and is compatible with PCIE3.0, with a maximum theoretical transfer rate of 64GT/S 3. Stable Performance: Enjoy stable performance, strong compatibility, and highspeed, lowloss transmission 4. Standard M.2 2280: Standard size M.2 2280, retains graining in the 2260 position. Designed as a cutting type to effectively ensure strength when using 2280 5. Call Transfer: M.2 NVME to SFF8643 interface and must be used with a U2 cable; the motherboard supports the NVMe protocol. Can be used with PH49M2+PH411U and supports PCIE slots Item Type: Adapter Expansion Card Material: PCB Applies to: M.2 NVME Protocol Extension Interface: SFF8643 Product Size: Approx. 80 x 22 mm / 3.1 x 0.9 inches (length x width) Package Includes: 1 x Adapter Expansion Card 1 x Screw 1 x Screwdriver Customer satisfaction is our top priority. If you encounter any issues with your product upon receipt, such as damage or incorrect quantity, please contact us immediately. We are committed to providing you with the best aftersales service.