With plug and play and no need driver design, this wire hub is convenient for you to use. With 4 ports, this wire concentrator can support multiple devices work at the same time. Made of plastic and metal material, it is durable and tough. Its length is 104mm, width is 35mm, height is 21mm. It is suitable for connecting mouse, keyboard, earphone, U disk, speaker, mobile hard disk, printer, etc. It supports overload current and instantaneous current protection. Item Name: Wire Hub Material:Plastic,Metal Power Supply: USB 5V/2000mA Support Operating System: Win95 osR2/98SE/Me/2000/XP/VISTA, Linux2.4 and Mac os8.5 or above Transmission Speed: Full Speed 480Mbps, Medium Speed 12Mbps, Low Speed 1.5Mbps USB: 2.0, Four Epitaxial USB Ports, Each Output with a Switch Size Details: USB Splitter Length: 10.4cm/4.1", Width: 3.5cm/1.4", Height: 2.1cm/0.8" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Product Manual: Power-saving and energy-saving USB hub with switch Each USB connection port has a USB hub with a switch. USB devices that are not usually used can save electricity and are very environmentally friendly. When the unused USB device is set to the off state, the load on the computer can be reduced, and the operating time of the notebook computer can be increased. LED lights are attached to the switches of each USB interface, and the ON/OFF status is clear at a glance. Package Includes: 2 x Wire Hub