Comliant with Serial ATA Specification 3.0,Compliant with PCIe 2.0 specifications. Supports communication speeds of 6.0Gbps,3.0Gbps and 1.5Gbps Supports programmable transmitter signal levels Supports Gen 1i,Gen 2i,Gen 2m, Gen 2x and Gen 3i Applicable Slot: PCI-E (1 x , 4 x , 8 x , 16 x ) Supports two SATA Ports Colour: Black Material: plastic + metal Supports AHCI 1.0 and IDE programming interface Supports Native Command Queuing(NCQ) Supports Port Multiplier FIS based switching or command based switching Supports Partial and Slumber Power Management states Supports Hot Plug and Hot Swap Compatible with SATA 6G,3G and 1.5G Hard Drives Large chassis / small chassis can be used. Bus Interface:PCI-Express x1 Connectors: 2x SATA System Support: PCI Express-enabled system with on avaliable PCI Express slot Windows 8/7(32/64bit)/Vista(32/64bit)/XP/Server 2003/2008 Board size:(L x W)71 x 57mm Bracket size:120mm and 80mm Note: This product can only be installed on a PCI-E interface, Do not install the older PCI interface Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 4Pc x PCI-e 2-Port SATA3 SATA III 6Gb/s Card (No retail package) 4Pc x Low Profile Bracket 8Pcs x Screws