yes you understand very well
remove any connection from pin 2 to 10 as you don't need that
also my red wire (in every cable the 5V wire or any wire that provides energy must be red) is yellow wire at your cable so cut it. also shortcut 9 and 11
pin 10 remain connected only to the light blue wire (but cut connection to pin2)
move the other 2 wires from 4 and 5 to 6 and 7
that shoul do the trick
PS your cable was not a service cable as stated by people who lold that to you. it's a data cable so of course it needs transition to service cable as mentioned above...
good luck.