Sienoc Desktop PCI-E to 2 USB 3.0 20pin Extender Port Card + Power Cable +20Pin 3.5 Front Panel Input Interface : 1 x PCI-e 2.0 Output Port 1: 2 x USB 3.0 Female Ports Output Port2: 1 x 20Pin (19PIn) USB 3.0 extender Female Port Other Port : 1x 15pin Serial Power Supply Port Applicable Interface: PCI-E x1, PCI-E x4, PCI-E x8, PCI-E x16 With NFC Chipset USB 3.0 Transfer rate up to 5Gbps With 15pin serial to 4Pin Power Cable With 20Pin (19PIn) USB 3.0 extender Female Port Compatible with Windows XP ,Vista ,2008 ,Win 7,Win 8 Specifications for Front Panel: 20 pin to 2 USB 3.0 female ports Copper conductor for maximum conductivity and reliability Plug-and-play driver installation less Backwards compatible with USB 2.0 and 1.1 Cable Length: Approx 50cm Fit PC with 3.5 "bay properly with provided screws. Simple solution for extending two USB ports on the front of the computer. Expand the USB 3.0 motherboard to an idle disk drive space. Maximum speed: 4.8Gbps (SuperSpeed), 10 times faster than USB 2.0 (480 Mbit / s).