Brand UNITEK Model Y-3042 Quantity 1 Color Black Material ABS plastic Connector Type USB 3.0 Port Number 4 Spacing 0.5cm Transmission Rate 5Gbps Power Supply Plug and Play Supports System Windows XP / Vista / 7(32bit / 64bit) Other Support hot swapping. USB 3.0 backward compatible with USB 2.0 USB 1.1. Power switch design to prolong item's life. Packing List 1 x USB 3.0 hub 1 x 2-Flat-Pin plug power adapter (100~240V / 140cm-cable) 1 x USB data cable (70cm)