Any of these will work with your model: 614-0366, 614-0326, 614-0398, 614-0353, 614-0296
These parts have ALS (Ambient Light Sensor), if you don't need ALS you can order this part and remove the ALS from this Power Supply. If this part is not in stock you can order part number 661-3350 with-out ALS and replace it with your old ALS before installing.
Your machine has ALS
661-3289 was replaced by 661-3625
Any of these will work with your model: 614-0366, 614-0326, 614-0398, 614-0353, 614-0296
These parts have ALS (Ambient Light Sensor), if you don't need ALS you can order this part and remove the ALS from this Power Supply. If this part is not in stock you can order part number 661-3350 with-out ALS and replace it with your old ALS before installing.
Compatibility
iMac G5 (20-inch), iMac G5 ALS (20-inch)