The QYT KT-8900 does not program through the front RJ-45 microphone jack like some other mobile radios. Instead, it uses a labeled "DATA" or simply acting as the data interface. The 3.5 mm TRS Pinout
You have a mirrored pinout. Flipping the plug swaps pins 1 and 8. That means your cable is wired opposite: Pin 8 is GND. This is non-standard; re-crimp properly. qyt kt8900 programming cable pinout top
If your computer doesn't recognize the cable, it's often a driver issue with "counterfeit" Prolific chips. Using a cable with an FTDI chip or a CH340 chip is highly recommended for compatibility with Windows 11. The QYT KT-8900 does not program through the
on the back of the unit, not the microphone port on the front. Chipset Compatibility: Many original cables use a qyt kt8900 programming cable pinout top