Original Apple, tested power supply board for the PowerBook 5300 series.
Note that since most 5300 PowerBooks batteries have leaked and no original batteries exist that still work up, and since this board is still required for the PowerBook to start up, we offer this board for sale with some or all of it's battery terminals corroded away. It will therfefore not recognise a battery.
This piggy backs onto the logic board and is required for the PowerBook to start up.