The 4-port hub includes 1 USB3.0 port + 3 USB2.0 ports. USB3.0 interface, theoretical speed can reach 5Gbps, and is backward compatible with USB 3.0/2.0/1.1/1.0 standard specifications. Current protection function, supports overload voltage and instantaneous current protection function, and is easy to use. The product is suitable for U disk, card reader, USB mouse, USB keyboard, scanner, digital camera, digital video camera, USB sound card, hard disk box and other devices, expanding 4 USB interfaces. Support plug, no driver required, plug and play. Product parameters: Output interface: 1 USB3.0 + 3 USB2.0 Input interface: 1 MICRO-USB3.0 + 1 MICRO-USB2.0 Compatible operating systems: Windows7/windows8/Windows8.1/ XP/ vista/Chrone OS/for-/Linux Different batches may have different silk screen printing, which not affect the use Colour:Transparent+Black Material:PCB+Plastic Package Contents: 1 x USB HUB 1 x USB cbale 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.