The USB Timing Box easily connects with the Transponder Module and Timing Module. Your PC should have the appropriate USB drivers to connect to the USB Timing Box. If this not be the case, please see Troubleshooting for instructions on installing Windows drivers.
Ensure that the TagReaderKeyboard and TagTool software are not open when the Transponder Module is connecting with the USB Timing Box. As they use virtual COM ports to connect to the USB Timing Box, it cannot connect to two applications at the same time.