I had purchased a USB to a 9 pin D-Sub connector serial cable some time ago, however it had an incompatible chipset for the TCU. The TCU requires an adapter cable with FTDI chipset. JAC organised the purchase and delivery of the correct serial adapter cable for the TCU. We connected the cable to my laptop computer with the TLR 4.6a program installed and everything worked after we changed the Com Port to port 2. It only took some very minor adjustments to acheive the required throttle settings.
