Vista - USB Composite Device (dc3d) KVM Issues

I have an "IOGEAR Micro USB Plus KVM" switch that has always been recognized as a "Generic Hub" and a "USB composite device". Connected to the KVM I have a "Microsoft Wireless Keyboard 6000 v3" keyboard and a "Logitech MX Revolution" mouse, which are also considered composite devices.

When trying to install the update, the installation would sometimes fail with error codes of "Time out" and "Out of Items".

Regaurdless if it failed or succeeded, the original driver would get replaced. The KVM switch would now be recognized as a "USB composite device (dc3d)" yet regaurdless what I had connected to it (USB wireless or not), nothing would work.

The KVM switch basically would not work anymore. Shutting down Vista caused a BSOD (with some STOP error of TIMEOUT). And Vista could not startup unless the KVM Switch was unplugged. To fix this I uninstalled the driver (removing it from the system) and the KVM switch went back to working normally.

Has anyone had this problem? Was anyone able to update this driver when using the IOGEAR KVM? Does anyone have any suggestions on how I could possible get this update working properly?

I'm unable to install this update without the KVM being plugged in, which might be what's causing the problem. Either way, it's not a big deal, though I would like to get the update installed since it does have some updates for the latest USB composite devices.

Keeping the KVM switch plugged into the system was infact the problem. Since both my keyboard and mouse are considered "composite devices", I figured I'd use them instead to update. And sure enough it worked!


So, if you installed the update and devices stopped working or the update failed, then you need to uninstall the driver to revert back. Below are the steps I took:

1. Plug ur USB keyboard and mouse into the computer (not the kvm)
2. Plug in the KVM switch (or w/e composite device is giving you trouble)
3. Open the "Device Manager" found in Control Panel
4. Expand the "Universal Serial Bus controllers" and double click the the "USB composite Device (dc3d)" item
5. Select the "Driver" tab and click "Uninstall"
6. Check "Delete the driver software for this device" and click "OK"
7. Unplug the KVM switch while it's trying to uninstall (else the uninstall will never finish)

Once you restart your computer, you can then try to perform the update again. Below are the steps I used to get it to work properly:

1. Unplug the composite device that was giving you trouble previously.
2. Plug other composite devices to your system that might work (in my case, I left my USB keyboard and mouse plugged directly into my system).
3. Install the update (if failed and things stop working, revert back to the previous steps).

So far, the only thing I know that causes trouble for the update is the:
IOGEAR Micro USB Plus KVM