2- M.2 PCI-Express 3.0 interface (B & M Key). Complies with PCI Express Base Specification Revision 3.1a. Supports PCIe link layer power saving mode. Supports -based and -based for Port Multiplier. Complies with SATA Specification Revision 3.2. Supports 8 SATA port. Supports Port Multiplier Supports AHCI mode and IDE programming interface. Supports Native Queue (NCQ). Supports SATA link power saving mode (partial and slumber) Supports SATA plug-in detection capable. Supports drive power control and staggered -up. Supports SATA Partial / Slumber power management state. Note: Does not support on Port Multiplier. Attention: The standard M.2 board is 0.8mm thick, please connect all cables first and then insert them into the M.2 slot; Under system, Only 5 ports can be recognized, and all ports can be recognized after entering the system and installing the driver. System Requirements: 7 (X86/X64) 8/8.x/10 (X86/X64) ( in-box driver) Linux-base OS Driver-free support:Unraid PVE Truenas Free Driver: http://.mmui.com.cn/data/upload/image/JMB582_585_586_5810_5824(PM).zip Colour:Black Material:PCB+Metal Size:80x22mm Package Contents: 1 x M.2(PCIe3.0) to 8 Port SATA3.0 Adapter 2 x MINI SAS to 4*SATA Cable 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection 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.