Features: brand new and high quality Printer sharing device, USB 2.0 sharing, sharing switch for 2 computers sharing 4 USB ports, for PC with a button switch and 2 USB cables One button exchange between 2 computers. Convenient and efficient, 2 computers share 4 USB devices, plug and for play. USB devices such as keyboards, mice, USB printers, scanners, curve plotters, multi-function printers, Bluetooth-compatible devices can be used with 2 computers, saving for time and money. for HDD, digital video camera and other equipment may need an external power supply to operate. When using high-power equipment, make sure to use a standard 5-volt adapter for power supply. Plug and for play, suitable for Windows, Vista, Linux and other systems, you can use it without installing a driver. Specifications: Switch Type: Push Button Switch Size:approx 118x56x16mm/4.64x2.2x0.63in Color:Black Output: 4 x USB2.0 Input: 2 x USB2.0 Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 x USB 2.0 Switch 2 x USB Cables 1 x User Manual