Aten Desktop KVM Switch 4 Port Single Display VGA, Selection Via Front Panel, Cables Not Included, Rack Mountable, Cascadable Up To 64 Computers CS1754 is a KVM Switch with 4 ports and supports computers with PS/2 or USB interfaces via cables and audio signal function. Moreover, it supports 3-tier connection via cascade. With 21 sets of CS1754, users can control 64 computers. CS1758 provides growing enterprises a reliable investment on comprehensive connection and long-term safe use. •One USB console controls 4 computers. •Cascadable up to 3 levels - provides up to 64 computers. •Dual interface supports with computers with PS/2 or USB keyboards and mice. •Multiplatform support: compatible with all operation platforms PC (Windows,Linux and most others), Mac and Sun. •Auto PS/2 and USB interface detection. •Buzzer On/Off via hotkey and OSD. •Computer selection via front panel pushbuttons, hotkeys and OSD. •Superior video quality - up to 2048 x 1536; DDC2B. •Firmware upgradable. •With speaker and microphone support. •ATEN USB ASIC inside. •Available in silver and black. •Rack mountable in 19' system rack. •Multiplatform support: Windows 2000/XP/Vista, Linux, Mac, Unix, Sun and FreeBSD. •For more information about KVMs which can connect to CS1754, see Compatible KVM Table.