4 port USB 3.0 PCI Express Card

4 Ports USB 3.0
Compliant with USB 3.0 specification revision 1.0
Date transfer rate up to 5.0Gbps
Supports 4 downstream ports for all speeds
Compatible with Windows 2000/ XP / Vista / Windows 7
Quantity:1PC
Size:120mm x 85mm x 16mm  Included 1x 2 Ports USB 3.0 PCI Express Card
1x CD Drive