We are finding that a lot of these newer generation laptops are underpowering these USB ports. Plugging into power usually alleviates these problems.
The other issue is that it has the driver installed already on a designated COM port from a previous RTI device being connected, meaning a reboot will usually fix the problem or ultimately updating the USB controller hardware drivers from the PC manufacturers website.
Please contact our tech support department if these issues are still failing as we would like to log them in addition to the troubleshooting.
Vincent Bova RTI Dealer Experience Manager Remote Technologies Inc.