Title says it all - it works. It's a bit expensive - that's why its only got 4 stars. This enables me to use the synscan handset to drive this mount as well as the HEQ5 Pro - I think it will be easier to use on a dark cold night than trying to press virtual buttons on a phone or tablet.

Despite my misgivings this cable worked perfectly after I re-flashed the handset with the latest Synscan software.

Thank you Flo for straightening me out!