This item is well made of premium material for durable and practical use. With current protection function, it is safe and convenient to use. It can connect to USB devices such as webcam, mouse, printer, scanner and more plug and play. Just expand your computer's connectivity with this 7-port USB hub with ON / OFF switch. Feature- Color: Black.- Material: Metal Plastic.- Size: Approx. 16.5 * 3.5 * 2.2 cm / 6.50 * 1.38 * 0.87 inch (L * W * H).- Operating voltage: 5V.- Operating current: 500mA.- Operating temperature: -20 to 75 degrees Celsius.- Storage temperature: -40 to 85 degrees Celsius.- High-speed USB2.0 port can be used simultaneously.- With current protection function, safe and convenient to use.- Friendly and ergonomic design.- Supports up to 480Mbps data transfer rate and is for desktop table disassembly.