This is a PCI Card 7 x 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 driverColour:blackMaterial:plasticPackage Contents:1 x USB 3.0 Expansion CardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia