Typically, a .rar file of this nature (especially those containing "USB" and "MIC") includes:

Look for an .EXE or .msi file if it's a driver, or follow the manual's steps to transfer firmware files to the root directory of your USB drive. Safety First

Update files (often with extensions like .U88 or .bin ) used to refresh the internal software of your hardware.

🛠️ Troubleshooting WTUSBV75MIC.rar: Your Guide to USB Firmware Updates