Adder SV4X16 SmartView X-Pro KVM switch allows  four users to control sixteen PS2 & VGA computers and has a built in KVM over CATx extender transmitters to control switch up to 200m away. It features an advanced OSD where up to 16 different passwords and user profiles can be stored. The SmartView X PRO can be set to automatically scan all ports or all active ports at a user definable rate. The switch also allows automatic mouse conversion where PS/2, IntelliMouse and RS232 type mice are all supported between switch and CPUs. Controlling mouse/trackball is PS/2 type. Please note that each of the RJ45 extender ports mirror a local port and requires an optional receiver unit to be purchased. Manual