1. USB Serial Cable RS232 to Mini USB connector Manufacturers tell you that use a copper brush to remove the sheath powder, copper chips, etc. remaining on the cable head. Use special metal scissors to cut off the excess corrugated copper tube outer conductor about 2mm from the end face of the connection sleeve. Use needle-nose pliers to expand the outer conductor of the corrugated copper tube outwards and turn it over, and tap it gently with appropriate tools such as needle-nose pliers and a hammer to make it flat against the end face of the outer casing. Note that the flanging requires uniformity and roundness.

2. USB Serial Cable RS232 to Mini USB connector Manufacturers tell you that remove sharp corners and trim burrs with water vise, file, emery cloth, and other tools.
3. USB Serial Cable RS232 to Mini USB connector Manufacturers tell you that for the inner conductor of the smooth copper tube, use a hand saw to close the fixed outer conductor and saw off the insulating tape and inner conductor protruding from the outer conductor, and use a file to trim the inner conductor (wrinkle) The end face of the copper pipe, remove the edges and corners, tap with a tap, and the depth should be suitable for the thread length of the inner guide assembly; for the inner conductor of the corrugated copper pipe, cut off the insulating tape extending out of the outer conductor with a water plier, and use special metal scissors to cut it off Inner conductor of appropriate length.
The above is the USB Serial Cable RS232 to Mini USB connector manufacturer's introduction and analysis of the following steps to install the cable connector, hope it helps you.