Control two computers using one monitor, USB keyboard, and USB mouse with D-Link 2-Port USB KVM Switch with Audio Support (KVM-221). The KVM-221 allows users to effortlessly control two systems without having to buy additional computer peripherals. It is ideal for the home office where business files are kept on one computer and personal files on another. With the built-in audio support, you can also share a set of speakers between two computers. Listen to music on one computer while having quick access to resources on the second computer You can even dedicate one computer as a music server.