U. 2 U2 SFF-8639 NVME PCIe SSD Cable Male to Female Extension 68pin Length: 50cm The cable enables the extension of a U. 2 connection. U. 2 SFF-8639 68pin male to female. Data transfer rate up to 2 GB/s (PCI Express rev. 2.0 ) resp. 4 GB/s (PCI Express rev. 3.0 )