[Elecraft] kx3 acc1 port - description?

[Terry Domae]

Hi all - I saw the description in the PRELIMINARY user manual.
Seems it just says a 3.5mm jack, and use a KXUSB or KXSER

Does anyone know how many pins - 2, 3, 4- there are ??

What are the pin-outs?

How about semantics for each pin ??
Like how is a serial port and usb port wired to interface ??

This is probably material for a technical manual.

I'll say it would be nice to have this information for all the ports either
in the user or technical manual (eventually).

Thanks, Terry