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Mac2MacOnline Sell Excess Apple to us Grading System IEEE Codes Warranty Subscribe to email Specials About the seller Store search Enter your search keyword in titles & description Store categories Store home AC Adapters/Batte​ries (10) Airport/BT/Ant​ennas/Modems (58) Cables (173) Case Parts/Bezels (208) CPU/Processors (10) CRT Projector Parts (28) Hard Drives/Caddies (31) Heatsinks/Fans (98) IR/iSight/USB Boards (23) Keyboards/Mice​/Top Cases (26) LCD/Glass/Inve​rters/Hinges (58) Logic/Motherbo​ards (16) IBM/Other Motherboards (1) iBook (2) iMac (2) PowerBook (3) PowerMac/MacP​ro (6) Xserve (2) Memory/Covers (18) Non-Apple Computer Parts (50) Optical Drives/Caddies (39) Power Supplies/DC In Boards (22) Remote Controls (1) Speakers/Sound Cards/Mic (34) Temp/Ambient Light Sensors (31) Video & I/O Boards (10) Xserve Parts (7) Other (10) Hide all subcategories All Apple logic boards have what is known as an IEEE code in the serial number that will determine exactly which computer the board is from.  All you have to is look at the last four digits of the serial number, on some boards its the last three and others you drop the last digit and use the preceding three. So, for example, if the serial number is W86180018VJBA on this particular one you would drop the last digit and the code is VJB which cross-references to a 661-3880 iMac Logic Board.