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JZ-PRG Specification https://myzone-kza3sadj.netdna-ssl.com/wp-content/uploads/2016/06/MJ20-PRG_TECH-SPEC_10-09.pdf
JZ-PRG Install Guide https://myzone-kza3sadj.netdna-ssl.com/wp-content/uploads/2016/06/JZ-PRG_INSTL-GUIDE_10-09.pdf
Here you can find all details, include pinout.
MJ10-22-CS76 internal wiring provide power to PRG module as well.
*PRG module power consumption is low and used only to power RS232 communication.
*When use CS10 adapter, you have to use RS232 port with full set of signals.
Unitronics supply Prolific based USB-to-Serial converter supporting all signals.
Other converters may have only RX, TX and Ground wires. And may not supply power to PRG module.