[USR-TC] Total Control Manager

I have been out of the loop for a while regarding the old USR/3Com/ whatever its called today but need to obtain a copy of the Manager software to configure the chassis. I've looked on the 3Com site and searched the web to no avail. I don't know how many copies of that I once had but can't come up with one now. I'd appreciate if someone could point me to a site that has it. Doesn't have to be the latest, greatest, just something that I can look at a couple of DSP's. Thanks. Greg