SFF 8643 to PCIe 4X Adapter converts the PCIe interface on the motherboard into a U.2 or connect the high performance 2.5inch NVMe U. 2 (SFF-8639) SSD to the computer motherboard.You can add a PCIe NVMe 2.5 in SSD to a computer system that doesn't support U.2 PCIe NVMe.Help your computer work faster: PCI Express x4 to U.2 SFF-8643 Adapter is up to four times faster than SATA SSDs, providing extremely fast read/write speeds, high-speed file access and transfers, and rapid boot times.PCI Express x4 to U.2 SFF-8643 Adapter, no driver required, works seamlessly for the operating system.Support for Windows 10/7, Windows Server 2008 R2.Interface speed: Maximum speed 64Gbps in PCIe 4.0 X4(Compatible with X8/ X16).Convert U.2 2.5inch PCIeNVMe SSD to work in motherboard PCIe x4 bus slot. PCIExpress 4.0 x4 Lane host adapter.Note: Not all BIOS systems support U.2 drives which are in NVMe format, you will need a BIOS with UEFI. Plus, a software installation is often required with U.2 SSDs, so get closer to the manufacturer of your SSD to make sure that you can use it.Item Type: SFF-8643 to PCI-E 4X AdapterSupport PCIe 4.0 and PCIe 3.0 motherboardscolour: blackMaterial: PCB+MetalPackage Contents:1 x SFF-8643 to PCIE 4X Adapter1 x 2U BracketOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.