Features Controls four computers from a single console Keyboard/Mouse over PS/2 and/or USB connections Supports Windows , Linux , Mac OS9/OS X , Sun Micro Solaris 8 For Sun Micro users, the external power adaptor is necessary when using the KVM Switch . Emulates a keyboard on each PC to allow your computers to boot normally without a keyboard error. Supports hot-swapping. All devices connected to the KVM can be added or removed at any time, without shutting the unit down. Supports 2 types of switching 1 Hardware Push Button, 2 Hot-Keys on PS/2 and/or USB of keyboard. Supports Auto-Scan function to alternate video between both computers in preset intervals. Easy switching via Hot Keys or logically designed port selectors Supports LED display for Selected and On-Line status monitoring. Supports VGA resolutions up to 2048 x 1536 maximum. Supports Beeper during Switching enabled. Self powered through PS/2 and/or USB connection the optional power adapter is not included, and we do not stock it Fully compliant with the USB 1.1/ 2.0 specification. Support Files User's Manual Oct 12, 2007 Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. Linux is the registered trademark of Linus Torvalds in the U.S. and other countries. Apple , Mac , and OS X are trademarks of Apple Inc., registered in the U.S. and other countries.