Features: 1.Allows you to install a PCIe?NVMe U.2 2.5?inch SSD drive (such as for Intel 750 U.2 SSD) to a PC system through a slim PCIe 4.0 x4 card. 2.1 mini?SAS HD (SFF?8643, 36?pin) female connector. System requirements: empty PCIe 4.0 or PCIe 3.0 x4, x8 or x16 slots. 3.Transparent to the operating system and no driver required. Support for Windows 10/8, for Windows Server 2012 R2, for Linux series, for Fedora, for SUSE, for Red Hat. 4.For OS X 2009, 2010 and 2012 models with High for Sierra OS installed support PCIe?NVMe SSD. 5.Convert U.2 2.5?inch PCIe?NVMe SSD to work in motherboard PCIe x4 bus slot. PCIExpress 4.0 x4 Lane host adapter. 6.Support PCIe 4.0 and PCIe 3.0 motherboards. Support PCIe L1 power management sub?state through for CLKREQ. 7.Low profiles PCIe form factor. Low profiles PCIE bracket on board and regular size bracket included. specification:Item Type: SFF-8643 to PCI-E 4X Adapter Material: PCB System Requirements: Empty PCIe 4.0 or PCIe 3.0 x4, x8 or x16 slots Support PCIe 4.0 and PCIe 3.0 motherboards Connector: 1 mini-SAS HD (SFF-8643, 36-pin) female PackageList: 1 x SFF-8643 to PCI-E 4X Adapter 1 x Screwdriver 4 x Screws 1 x Bracket