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What is the difference using USB port and Lan port ?
Thank you for your inquiry,

The VGA video and USB port plug into the source computer for keyboard, mouse, and video, and then the MPUIQ-VMCHS connects to your Avocent KVM Switch with a single CAT 5 LAN cable (up to 150 ft/45 m long).

The MPUIQ-VMCHS module essentially extends keyboard, monitor and mouse signals from a server through a single CAT 5 cable to your switch. The MPUIQ-VMCHS dongle also draws its power from the server through USB and has \'Keep Alive\' functionality that will keep your server working properly when switching sources.

Please let us know if there is anything else we can help you with!
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