link for software https://hamfiles.co.uk/index.php?page=downloads&type=entry&id=radio-programming%2Fkenwood-programming%2Fkpg-76d_v100 also can confirm that the programming cable is 8-pin however it only utilizes 4 ( 3v txd rxd and ground ) cant recommend a cable as I build my own using a usb to ttl converter CP2102 , have heard a lot of good reviews about bluemax49ers cables https://www.ebay.com/usr/bluemax49ers?_trksid=p2047675.l2559