[Big Expansion] - Provides seven external USB 3.0 ports for any PCI Express-enabled computer system for connecting additional external hard drives, CD/DVD drives, printers, scanners, webcams, game controllers, digital cameras, etc. to a computer system. [SuperSpeed USB 3.0] - Give you fast access to your files with data transfer rates up to 5 Gbps, at least 5 times faster than USB 2.0. Charging fast to transfer HD , photos, music and more. Note: The actual transmission speed may be limited by the connected device. [Good Compatibility] - Support 10/ 8/ 7/ Vista/ XP (32/64-bit) and more ; Backwards compatible with USB 2.0 / 1x devices; Comply with PCI Express x1 slot and versions above. [Stable Power Supply] - Equipped with a power management chip plus 15-Pin SATA power cable, which supplies 5V/2.4A power. Each port of the PCI-E card delivers 5W(5V/1A) power max. Devices, which require more than 5W power, may not be compatible with this USB expansion card. It is recommended that not plug in several high-power devices at the same time. Colour:Black Material:ABS Package Contents: 1x hard disk controller 5x Connection lines (Appearance color random,don't accept the specified color) 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.