Astrotek External USB 3.0 4 Port Hub, Slim Design with 13mm Height, Bus Power Feature, 4 x USB 3.0 High Speed Port with Max 5Gb/s transfer rate<br /> Specifications :<br /> - Chipset : VLI VL810 <br /> - Slim Design with only 13mm Height &amp; Bus Power features well-suit for mobile application <br /> - 1 x USB 3.0 Super Speed Upstream Port <br /> - 4 x USB 3.0 Super Speed Downstream Port<br /> - 1 x DC Jack <br /> - Supports Bus Power from USB 3.0 Upstream Port (without DC Power Supply &amp; with only Upstream Port 5V/900mA power, max. 150mA total current output for all 4 x USB 3.0 Downstream ports loading) <br /> - Supports Self Power from 5V/4A Power Adapter when high-powered devices are connected (900mA for each USB 3.0 Downstream port, total 3.6A loading) <br /> - 1 x Blue Power LED, 4 x Red Port Connect LED <br /> - USB 3.0 specification rev. 1.0 compliant<br /> - USB 2.0 specification rev. 2.0 compliant <br /> - Supports Super Speed 5 Gb/s, High-Speed 480 Mb/s, Full-Speed 12 Mb/s, &amp; Low-Speed 1.5 Mb/s <br /> - Max. 5 Gb/s USB transfer rate<br /> - Over-current sensing &amp; Fuse Protection for each port<br /> - 5V/4A power adapter provides sufficient current to 4 downstream ports (0.9A x 4 = 3.6A) <br /> - Plug &amp; Play<br /> - No drivers need for Windows, Mac OS 10.X &amp; Linux