This is a PCI Card 7* High speed USB 3.0 expansion interface when you need to use multiple external USB products at the same time, this Card will be the best . With two power modules, no additional power supply is required. USB 3.0 PCI-E Expansion Card has USB 3.0 interface Transmission rate could reach 5Gbps, downward compatible with USB 2.0 / 1.1. Compliant with PCI Standard version 2.0. 7 Ports USB 3.0 Adapter Card meet the standard Universal Serial Bus 3.0. A USB device to connect 7tlg simultaneously. The USB interface can 5V2A power supply for external devices. 7 Ports USB 3.0 PCI-E Expansion Card Adapter Support Linux / Windows XP / 7/8 / 8.1 / 10 and 32 bit or 64 bit WHQL CERTIFIED driver Colour:black Material:plastic Package Contents: 1 x USB 3.0 Expansion Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.