ATEN, Part #: KH2516A Aten ALTUSEN KH2516A KVM Switch - 16 Computer(s) - 4 x PS/2 Port - 4 x USB2 x VGA Marketing Information:The KH2508A and KH2516A KVM Switches are control units that allow IT administrators to access and control multiple computers from two PS/2 or USB KVM consoles (one bus). Operators working at up to two consoles can independently and simultaneously take control of up to 8 (KH2508A), or 16(KH2516A),computers.