Here is the business end of the US Interface Navigator radio to computer sound card audio interface.
Ports include:
- DE9* Male Connector marked “RS-232”
- DB25 Female Connector marked “Transceiver”
- Mini-Phone plug marked “CI-V AUX”
- A USB port marked, well, “USB”
* Yes DE9 is correct. There is no such thing as a DB9 connector in the D-Shell series. It has always been an E size shell thus the correct reference do DE9.