Complies with M.2 KEY M standard. Transmission protocol: PCIE X2, supports PCI EXPRESS with up to two channels. Complies with revision 3.1A of PCI EXPRESS base specification. PCI EXPRESS link layer power saving mode is supported. -based and -based port multipliers are supported. SATA compliant revision 3.2. Supports AHCI mode and IDE programming interface. Native queue (NCQ) is supported. SATA LINK power saving mode (partial and sleep) is supported. SATA plug-in detection is supported. Supports driver power management and step rotation. SATA PARTIAL/SLUMBER power management status is supported. Plug and play, no additional software installation or setup required. Specifications: Name: PH516. Size: 80 x 22 mm Hard disk support: hard disk that supports SATA protocol. Support: 5 SATA devices. System: for Os //Linux. Speed: SATA3(6G) The total bandwidth of the bottom layer is 16G. Color: black Material: PCB+Metal+Plastic Package Contents: 1 * Adapter Board. 1 * Screwdriver. 1 * Screw The above package contents only, other products are not included. Note: Light 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 +/- 1-3 cm.