1. Convert the PCIe interface to the SFF - 8643 Gen 3/4 interface, and transmit the 2.5 - inch NVMe U.2 (SFF - 8639) solid - state drive through the SFF - 8643 to SFF - 8639 cable. The mechanical and electrical specifications of the PCI card are 2.0. 2. It has a built - in SFF - 8643 plug connector. 3. It supports NVM 1.0 and PCIe 4.0. 4. The adapter card does not require a driver. 5. The motherboard needs to support the NVMe protocol. 6. Type: Pcie4.0 expansion card. 7. Interface: SFF - 8643. 8. Compatible drivers: U.2 (PCle NVMe solid - state drive, SFF8639). 9. Supported devices: 1 NVMe solid - state drive. 10. Supported bezel: Half - height. 11. Motherboard support: The motherboard BIOS needs to support the PCIE slot splitting function. 12. Material: PCB. 13. Color: Green. 14. Package contents: - 1 expansion card. 15. Only the above package contents are included, and other items are not included. 16. Note: Light reflection and different displays may cause the color of the item to vary slightly from the actual product. The measurement error is allowed to be ±1 - 3 cm.