Features: USB3.0 port provides a transmission rate of up to 5Gbps, 10 times faster than USB2.0, and is backward compatible with USB 2.0/1.1 standard Specifications. Plug and play compatibility, USB bus power supply, no need for additional power adapter drivers or applications. Support hot plug, built-in overvoltage/overcurrent/leakage and short circuit protection unit. 7-port USB3.0 provides 7 ultra-high speed USB3.0 ports for data transmission and charging. Fully compatible with USB specification version 3.0. Support: windows95/98/ME/2000/XP/Vista, Mac 8.6 or later. ON/OFF switches activate or deactivate individual ports. Portable enough for travel, and cable enough to meet your connectivity needs. Note: This HUB is not a power charger Specifications: Type: USB 3.0 HUB Ports: 7 ports Working humidity: 10% - 90% Working voltage: 5V Working current: 500mA Working temperature: -20C - 75C Storage temperature: -40C - 85C Color: Black Cable length: about 25cm Main Unit Size: 17*4.5*2cm / 6.69 1.77*0.78in Item Weight: 99g / 3.49oz Package Size: 20*7*3cm / 7.87*2.75*1.18in Package Weight: 103g / 3.63oz Package List: 1 * 7 Ports USB 3.0 HUB