Just checked again .. the part I list is the VGA/LAN Adapter (dongle) for the X505ZP/X505VP.
I picked up the part number from the Service Manual from Sony. It’s listed as component 802 on the breakout, with a picture of the dongle shown.
Sony is notorious for their confusing part descriptions. The breakout in the Service Manual lists the same description as the DAPC website: A-8119-547-A COMPLETE PWB FPC-VGA ADP (S).
Have a look at the breakout at Nexttronics (which is basically the same as the Service Manual):
Jef