what is the purpose of the plug on the IFI breaker pannel?

[Validius]

The one that a PWM cable can plug into next to the LED. Could it be a remote reset switch?

[ntroup]

From the IFI Support Forum:
Question:
In the center of the breaker panel, near the LED indicator, there is a three-hole socket that looks like it could accept a PWM wire. Is this socket implemented currently?

Answer:
This connector should not be used. It provides the same RS-232 data that is present at the DB9 connect.
Direct link to the Forum (http://www.ifirobotics.com/forum/viewtopic.php?t=165)

There is also much discussion about it on CD from last year here (http://www.chiefdelphi.com/forums/showthread.php?t=32461&page=2&pp=15)

Hope that answers the question
-Nate