?PCI-E X4 U.2 SFF-8639 2.5" NVMe SSD adapter connects directly to motherboard, it supports super fast PCI Express ?V3.0 X4 channel, transmission bandwidth up to 32GT/S, and can support U.2 SFF-8639 2.5-inch SSD drive size ?Through this adapter can system speed, and office and entertainment efficiency. ?Compliant with PCI Express Specification Revision v3.0 ?Backward compatible with PCI-E V2.0 and V1.0 motherboards ?Supports one U.2 SSD drive ?U.2 SFF-8639 SSD gets 3.3v power from motherboard PCIe BUS slot ?Windows 10/8/8.1/Server 2012 R2, for Linux, for Fedora, for SUSE, for Ubuntu, for Red Hat native drivers all support PCIe NVMe ?No driver is required as the driver is transparent to the OS and needs to support the NVMe protocol ?Supports PCI-E Gen3, PCI-E Gen2, PCI-E Gen1, PCI-E Gen3 slot is recommended for high performance Specification: ?Industrial working temperature range: -40℃~85℃ ?Bus Type: PCI Express X4* Rev 3.0 ?Transmission medium: 1 x U.2 SFF-8639 NVMe SSD connector ?Transfer rate: 32 GT/S (PCIe Gen 3x4) ?Hard disk compatible: U.2 SSD, SAS SSD, SATA 7+15 SSD, 2.5-inch SSD / Hard disk Application: ?Convert U.2 to PCIE using 2.5" U.2 NVME SSD (Note: PCIE channel only, no SATA channel/cable required) ?Use 2.5 inch SATA HDD/SSD, SATA to SATA (Note: Only SATA channel of PC can be accessed via SATA cable, not via PCIE channel)