I remember when USBs were introduced . One size fits all and an end to multiple different connectors !!!!!!!!!
can you post a couple more photos? one looking directly into it?
I'm normally good at this but I'm pretty lost here
Have you searched for a DP "Display port"? Also mini DP.
Take a close up of the end view of the connector..I've found one in my loft for another camera that fits and works
View attachment 203084
Still need a name to get another
Mini DP is very similar shape, but I'm sure the ports on these cameras predate Display Port by several years, let alone Mini DP.Have you searched for a DP "Display port"? Also mini DP.