612-0027-C 661-4112 Inverter for iMac NB-4654W
This is a replacement inverter board for the 20-inch Intel iMac. This controls the backlight for the LCD. There are three main revisions of the Intel 20" iMac".
EEE code: W03,W04
Apple part number: 661-4112, 612-0027-C
iMac (20-inch Late 2006) 612-0027-C
661-4112 Inverter for iMac 6120027C