The CPU switches distributed by our company allow 2 functions: A) Control several CPUs. Up to 4 CPUS can be controlled from the same keyboard/monitor. The CPUs are connected to the switch, and a single keyboard, monitor and mouse to access the selected CPU. B) Multiple access to a CPU. It allows access from 4 access points to the same CPU. Ideal for an environment where you have to access from two different locationsIt is and not simultaneous. For example, one access from store and another from store.