When using Windows XP Mode to operate micor-T software on a Windows 7 computer, the COM port must be attached to the virtual machine before use.
1. Launch the virtual machine.
2. Insert the micro-T USB reader into the computer.
3. Select USB from the virtual machine menu.

Figure 1: Attach Device to Virtual Machine
4. Click on Unidentified Device to attach the port to the virtual machine as opposed to the main computer.
5. Install the driver according to the following article. Installing micro-T Driver