Description of HDMI KVM Switch KVM USB Switch allows you to share one USB keyboard, USB mouse, and one HD monitor to control 2 computers, laptops, game consoles. It is designed for multitask with two computers at your necessary, increasing productivity in the office or at home; You can switch between 2 computers using a manual switch located on the top of the KVM unit.   Features 1. KVM USB Switch share One USB keyboard, USB mouse, and HD monitor control two computers. 2. Max resolution: 3840 x 2160p at 30Hz. 3. No software drivers required, plug and play. 4. Supports two modes: Duplicate and Extend. 5. Support HDMI Switch and HDMI Multiviewer functions.