Apricorn Velocity Solo SSD Upgrade Kit for Desktop PCs Kit VEL-SOLO Compatible with 25 inch SATA III SSD (and HDD) Backwards compatible with SATA II SSDs Uses a single PCIe 20 x1 slot Auxiliary SATA III port for additional expansion Ideal for use as a boot disk or scratch disk Compatible with 2.5 inch SATA III SSD (& HDD) Backwards compatible with SATA II SSDs Uses a single PCIe 2.0 x1 slot Auxiliary SATA III port for additional expansion Ideal for use as a boot disk or scratch disk Includes Apricorns EZ Gig Cloning Software with Data Select Supports Win XP, Vista, 7 The Velocity Solo is the easiest way to add the speed of SolidState and SATA III to your desktop