Automatic Exchange USB 2.0 KVM Switch 4 Ports Hub Adapter for Computer Printer Scanner Description:The USB 2.0 automatic sharing switch is a great solution for sharing USB devices such as a USB printer, scanner, curve plotter, multifunction printer, with up to four computers. Allow 1-4 PCs to share 1 USB interface device Each external device with a USB port, such as printers, scanners, plotters, MFPs, Bluetooth devices, and other external devices with a USB 128 port, can pass UY-04A or UY-02A standards to share a single device on multiple computers, significantly reducing costs buying office equipment also allows you to save more space. Supports windows 2000 / xp / Vista / Windows7 32bit, MAC OS. Use the control button and the F11 button to switch. When using superior raw materials, the energy consumption is lower. LED indicator. Easy to install, convenient disassembly Housing: Metal housing