VANTEC 4 Channel, 2 mSATA + 2 SATA 6Gb/s PCIe RAID Card with HyperDuo Model UGT-MST644R External Ports: 2 x mSATA 6Gb/s Ports 2 x SATA 6Gb/s Ports (backwards compatible with SATA II/I) PCI Express x2, compatible with PCI Express x4, x8 and x16 slots Operating Systems Supported: PCI Express x4, x8 or x16 slot Windows® XP/Vista/7/8/8.1 Dimensions: 6.10 x 2.00 x 0.71 Package Contents: 1 x 4 Channel, 2 mSATA + 2 SATA 6Gb/s RAID Card with HyperDuo 1 x Driver CD 1 x User Manual 1 x Low Profile Bracket 2 x SATA Cables