This is the combo power and audio connector on the Nintendo Game Boy Advance SP.
_____________ | 1 ___ 2 | | --- --- | |_6_5 4_3_| \_/
|1||Headphone Detect||Shorts with pin 6 or shield to enable audio out and disable internal speaker|
|3||PWR(+) 5.2v DC||audio out while internal speakers are off|
|4||Audio R||audio out while internal speakers on|
|PWR(-) GND||Charging ground as well as headphone detect|
There is report that 1+6 doesn't enable audio out and does not disable internal speakers. 5+6 do.