Optiplex 990 Issue with Cables-To-Go KVM (Model #35555)

Hello,

I work for a University College Department as a Desktop Support Engineer and we just received a batch of tweleve Optiplex 990s and will be receiving about ten more and many more after that over the course of the year.

We have about 300+ Windows computers in this college department and they range from white boxes (Athlon XPs) to Dell Optiplex GX240s thru Optiplex 990s and Dell Latitudes. We have a workbench down in the IT room with two Cables-To-Go USB KVMs (Model #35555) and they work perfectly with every machine (unless if the BIOS does not support USB keybaords/mice) from the 6+ year old white boxes to the Optiplex 980s. However, the keyboard/mouse attached to this KVM will not work AT ALL with the new Optiplex 990s. I made sure that all the USB options were enabled in the BIOS. The keyboard/mouse do not even get detected within Windows. This has ONLY happened with the Optiplex 990, I can't think of another machine that we have that doesn't detect the keyboard/mouse at all.

However, connecting a keyboard/mouse (USB) directly to the machine does work, it just so happens that keyboard/mouse do not work when connected to the KVM, and we did try different keyboard/mice models attached to the KVM.

I have emailed Dell and they basically told me that the KVM was incompatible with the Optiplex 990 and I should either a) contact cables-to-go [pointless because there is nothing that they can do]
b) replace the computer with something that is compatible [can't go this route because the Optiplex 990 is the contracted sys.config. for the University]

I truly believe that it is a BIOS issue and I just wanted to email Dell and let them know, but they basically told me to get new KVMs/Computers, which is stupid. The KVM works on every other computer except the newest Optiplex 990.

So has anybody else experienced these kinds of issues with the 990s?

Thanks,
Zach