Feature: 1. PCIE 4.0: M.2 PCIE 4.0 to SFF8643 U2, support PCIE 4.0, backward compatible with 3.0. 2. HIGH SPEED TRANSMISSION: Supports PCI‑E 4.0 compatible with PCIE 3.0, maximum theoretical transmission rate of 64GT/S. 3. CUTTING TYPE: Retain the 2260 position pattern, designed as a cutting type, effectively ensure the strength when using 2280, if you need to use 2260, you can use tools to cut it according to the pattern. 4. U.2 INTERFACE: M.2 NVME to SFF 8643 interface needs to be used with U.2 cable. 5. NVME: M.2 NVME interface supports NVME protocol, stable performance, strong compatibility, high speed and lossless transmission. Specification: Item Type: M.2 NVME to U2 Adapter Material: PCB Model No.: PH49 M2 Application: M.2 NVME Protocol Extension Interface: SFF 8643 Support: PCIE 4.0 Backward Compatible 3.0. Package List: 1 x Expansion Card1 x Screws1 x Screwdriver1 x Connection Cable