Features:
Add 4 USB 3.0 ports(2 x Type A + 20 Pin Internal) through a PCI Express slot
Combo kit include 2FT USB 20pin to 2 ports USB 3.0 female splitter cable with 3.5 inch front panel bay
Chipset: VIA VL805
Power by PCIe slot, but still built-in power-enhanced Molex 4pin Interface
Support USB hot-plug function Comply with PCI-Express Specification Version 2.0;
Comply with USB 3.0 Super Speed specification version 1.0, Maximum transfer rate of up to 5Gbps, up to 10 times of USB 2.0, Backward compatible with USB 2.0, USB 1.1, USB 1.0
Comply with xHCI specification version 1.0
Supports PCIe 1x, 4x, 8x, 16x Slot
Supports Windows XP / 2003 / Vista / win7 / win8 / 2003 / MAC 10.8 above systems
Specification
Bus Type: PCI Express
Mounting Type: Full Profile PCI slot cover
Chipset: VIA VL805
Interface: 2x USB 3.0 Port Type-A & Internal USB 20pin header to 2x USB 3.0 floppy 3.5-inch front panel
Data Transfer Rate: USB 3.0 - 5 Gbit/s
Connector Type (s) 1 - PCI Express x1 Male
Rear Ports: 2x USB 3.0 Port Type-A Female
Front Ports: 2x USB 3.0 Port Type-A Female