Features: Brand new and high quality Rocketek USB sharing switch for 2 computers that shares 4 USB 2.0 ports, saving you money and time. Widely used in keyboard, mouse, USB printer, scanner, chart plotter, multifunction printer, flash drive and other USB devices between 2 computers. Easily switch between 2 computers with a single click of the button with LED indicating the active computer. Plug and play. Convenient and efficient. When using a high-power USB device, an external 5V adapter is required. Normally, no external adapter is required. Specifications: Brand: Rocketek Item: KVM Switch Box USB 2.0 Input: 2 USB 2.0 ports/3.0 ports Output: 4 USB 2.0 ports Mirco USB: 5v/1A - Power input Material: Aluminum+PC Size: Approx. 10.5x5.4cm/413x2.12in Note: Due to lighting effects and shooting angles, there will be some tolerances in the product, please understand. Please allow 0-1cm error due to manual measurement. Any charger with a voltage higher than 5V output is NOT allowed and may affect the product. Devices such as hard drives and digital video cameras may require external power to work. Please be sure to use a standard 5V adapter for power supply when using a high-power device. Package includes: 1 x USB Switch 2 in 4 out (USB 2.0 /3.0 ports optional) 2 x USB A to A data cable