With the BG-MKVM41R 4x1 Multi-Viewer KVM Switch from BZBGear, you can control up to four computers from a single keyboard, mouse, and 1920 x 1080 Full HD resolution monitor. Simply connect the computers and your peripherals to the switch using the designated USB Type-B, HDMI 1.3a, and USB Type-A ports, and you're ready to go. Press the front panel buttons to switch between systems or you can configure a keyboard hotkey and/or a mouse button for fast switching. The BG-MKVM41R also includes a convenient IR remote switcher. The BG-MKVM41R also supports Multi-viewer switching mode, which lets you to skip button pressing altogether by allowing you to smoothly switch between desktops by moving the mouse pointer. Other features include two USB 2.0 Type-A ports for sharing devices such as flash drives, printers, and more across the connected computers. This device is designed to work with Windows and Mac systems. The RS232 port works with the included cable termination plugs to update the KVM switch.