Its a problem with devices using the newer USB driver set. The TechUSB needs to be updated with both the old and new USB Drivers. Then it would work even without UEFI support.
Currently as of this moment that I know of TechUSB has been put on the back burner until TechSuite and Kabuto mature a little more.
Don't quote me on that though. I found this information out about a month or two ago so there might be some new information on this.
Currently there are no plans to work on TechUSB in the near future.