SIIG 4-Port USB 3.0 PCIe Model JU-P40412-S1 Type: PCI Express to USB Card External USB Ports: 4x 9-pin, Type A, USB 3.0, Female, External Internal Ports: 1x 15-pin, SATA power connector Standard: USB 3.0 Operating Systems Supported: Windows 8 (32-/64-bit) / 7 (32-/64-bit) / Vista (32-/64-bit) / XP (32-/64-bit) / Server 2008 R2 / Server 2003 & 2008 (32-/64-bit) Specifications: Compliant with Universal Serial Bus 3.0 Specification Compliant with PCI Express Base Specification, Revision 2.0 Supports per port over-current protection Chip: Renesas UPD720201 Certifications/ Standards: FCC, CE, RoHS Dimensions: 2.76 (W) x 0.79 (H) x 4.72 (D) Weight: 0.12lbs.