Features: brand new and high quality new high-quality PCIe PCI for Express to SATA3.0 2-Port SATA III 6G expansion card adapter controller T21A compliant Serial ATA 3.0 specification, in line with PCIe 2.0 specification.Support switching based on FIS port multiplier or switching based on command Support 6.0 Gbps, 3.0 Gbps and 1.5 Gbps communication speed.Support Gen 1i Gen 2i Gen 2m Gen 2x and Gen 3i Supports programmable signal level of the transmitter,support hot swap Support PCI for express system with available PCI for Express slot for Windows 8/7 (32/64 bit)/Vista (32/64 bit)/XP/Server 2003/2008 Specifications: Applicable Slots: PCI-E (1, 4, 8, 16). Supports Two SATA ports Speed:6.0 Gbps 3.0 Gbps and 1.5 Gbps Support AHCI 1.0 and IDE programming interface Support local command queue (NCQ) Hot swap for:SATA 6G, 3G, 1.5G hard drives Bus Interface: pci-express x1 Size:approx 12x7x2cm/4.72x2.76x0.79in Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 x Adapter Card