Aux Socket (6 pin RJ-11 type, Western???) (CPC Plus and GX 4000 only)
This port combines the expansion port's LPEN signal and the joystick ports Fire signals. Invented to make it easier to connect a light gun (especially since the GX 4000 doesn't have an expansion port). Used for the [[Trojan Light Phazer]].
1 +5V
2 /Joystick1 ???