1、Control Four PCs. Connect the combo to the switcher, to control four hosts with one set of keyboard and mouse, for convenient working, with no damages to the devices and no need to change the device for more efficiency. 2、USB High-speed Transmission. USB 2.0 offers high-speed transmission of large files, and stable signal transmission. 3、Wide Compatibility. Widely compatible for mouse, keyboard, U Disk, hard disk, printer, scanner, AIO, etc. 4、Smooth Switching. Button design for smooth switching, and it needs only a gentle press to switch to other host. 5、All Metal Casing. Made of high quality metal to protect the circuit inside the switcher and reduce the signal interferences. Features: Control Four PCs. Connect the combo to the switcher, to control four hosts with one set of keyboard and mouse, for convenient working, with no damages to the devices and no need to change the device for more efficiency. USB High-speed Transmission. USB 2.0 offers high-speed transmission of large files, and stable signal transmission. Wide Compatibility. Widely compatible for mouse, keyboard, U Disk, hard disk, printer, scanner, AIO, etc. Smooth Switching. Button design for smooth switching, and it needs only a gentle press to switch to other host. All Metal Casing. Made of high quality metal to protect the circuit inside the switcher and reduce the signal interferences. Plug and Play. Plug and play, with no driver required, compatible for Windows OS, Mac, Android, Linux. Specification: Brand: AIMOS Model: AM-404K Item Name: USB 4-Port Switcher Port: USB 2.0 Switch Mode: Button Power Supply: USB 5V Item Size: 100 * 65 * 19mm / 3.9 * 2.56 * 0.7inches Item Weight: Approx. 350g / 12.3oz Packing list: 1 * Switcher 4 * USB Cables 1 * User Manual 1 * Switcher 4 * USB Cables 1 * User Manual