This KVM switch by Delock is a convenient solution for connecting four computers with an HDMI output to an HDMI monitor. Peripheral devices. In addition, two USB 2.0 ports for connecting a mouse and keyboard, and two 3.0 ports for a hard drive or USB memory. Flexible control. The active computer can be selected by a mouse movement, a keyboard key, a key on the device, or an infrared remote control.