ITEM NAME:2 Port USB 3.0 PCI-E Expansion Card 19pin Header 4pin IDE Power Connector ME Easy to Install. USB 3.0 supports transfer rates of up to 5 Gbps. Compatibility: Works great with Windows XP 32/64, Windows 7 32/64, Windows8, Windows8.1, Windows10. Specification: Bus Mode: PCI-E x1 Compatible Slots: PCI-E x1 / x4 / x8 / x16 USB Interface: 2 USB3.0 ports Transmission Rate: USB3.0, 5Gb / s Support Operating System: Windows XP 32/64, Windows 7 32/64, Windows8, Windows8.1, Windows10 Quantity: 1pc Package included: 1 x PCI-E To USB3.0 Expansion 1 x Driver CD No Retail Packing.USB Interface: 2 USB3.0 ports. 1 x PCI-E To USB3.0 Expansion. Bus Mode: PCI-E x1. Quantity: 1pc.