Product Detail 2 x SuperSpeed USB 3.0 port with up to 5Gb/s bandwidth. Backward compatible with HighSpeed USB 2.0 and FullSpeed USB 1.1 PCIe 2.0 x1 slot card. Compatible with PCIe 1.0 & 2.0 (x1, x4, x8 and x16 slot). Supports Microsoft Windows OS including the latest Windows 7. Compatible with Sans Digital USB 3.0 storage models: TS1U-B, TR4UTP, TR4UT-BP, TR5UTP, TR5UT-BP and ER104UT+B. . The "Sans Digital HA-SAN-2U3PCIE 2-Port SuperSpeed USB 3.0 PCI-Express PCIe 2.0 x1 Host Adapter" is best product for you. We recommended Sans Digital HA-SAN-2U3PCIE 2-Port SuperSpeed USB 3.0 PCI-Express PCIe 2.0 x1 Host Adapter