The Guntermann & Drunck DVIVision-U2-CON-RM KVM Receiver, A1120128 has now been superseded to the DVI-Vision-CAT-ARU2-CON A1120202, please Click on the link below to take you to the new specifications and data sheet
http://www.omniotech.com/gd-dvi-vision-cat-a1120202-pr-2228.php
The added advantages are as follows:
Audio and Serial as standard
Operational On-Screen Display
Pro-active system Monitoring & Web Interface as standard
Optional Rack Mount kit