Welcome to our store! 1. Allows you to install a PCIe-NVMe U.2 2.5-inch SSD drive (like the Intel 750 U.2 SSD) into a PC system via 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 is required. Supports Windows 10/8, Windows Server 2012 R2, Linux series, Fedora, SUSE, Red Hat. 4. For OS X 2009, 2010, and 2012 models with High Sierra OS installed, it supports PCIe-NVMe SSD. 5. Converts U.2 2.5-inch PCIe-NVMe SSD to work in the motherboard's PCIe x4 bus slot. PCIExpress 4.0 x4 Lane host adapter. 6. Supports PCIe 4.0 and PCIe 3.0 motherboards. Supports PCIe L1 power management sub-state through CLKREQ. 7. Low-profile PCIe form factor. Low-profile PCIE bracket onboard and standard size bracket included. 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 Supports PCIe 4.0 and PCIe 3.0 motherboards Connector: 1 mini-SAS HD (SFF-8643, 36-pin) female 1 x SFF-8643 to PCI-E 4X Adapter 1 x Screwdriver 4 x Screws 1 x Bracket Customers are our top priority. If you encounter any issues with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.