I referenced this video to modify a Baofeng cable to make a programming cable for a Yaesu FT-4X.

• Pulled 3.5 mm audio pin out of cable

• Open case at USB end of the cable gently with small screwdriver. Pry at the cable stress relief end.
• Watch this video (Yaesu FT-4X Programming Cable) and dig out the needed diode from your parts stock.

• solder it up

 

 

 

• Test the cable with programming software available at yaesu.com
• Reassemble the case