2) Connect the transceiver's USB port to your PC's USB port using a Micro-USB cable, and select the COM port you will use by following the Help file.
In the folder labeled "TH-D74_V105E", two files "TH-D74_V105_e.exe" and "TH-D74_e.chm" are automatically created.
1) Start the program by double-clicking "TH-D74_V105_e.exe" icon.
Delete the folder labeled "TH-D74_V105E" manually using the Explorer or an alternative method.
This software does not modify the system registry parameters or system folder.
ATTENTION: Do not connect the transceiver to a PC using a Micro-USB cable before installing the virtual COM port driver.