1.This is a PCI Express Card 7 High speed USB 3.0 expansion interface when you need to use multiple external USB products at the same time, this Express Card will be the choice. 2.With two power modules, no additional power supply is required. 3.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. 4.Compliant with PCI Express Standard version 2.0. 7 Ports USB 3.0 Adapter Card meet the standard Universal Serial Bus 3.0. 5.A USB device to connect 7tlg simultaneously. The USB interface can provide 5V2A power supply for external devices. 6.7 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 7.Product Set Includes: 1x7 Ports USB3.0 PCI Express Card - 1xCD for driver installment 8.Material: PCB + metal 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.