USB To RS232 TTL UART PL2303HX Auto Converter USB to COM Cable Adapter Module

[27grains]

Where is the connection point?

 

[alastairstevenson]

It's quite hard to tell with that thumbnail-sized image - but it looks like it's the 4-pin connector towards the inside edge of the board, in line with where the triangular ESD warning points, next to the in-line group of 3 capacitors near the front panel cable.
If that makes sense ...