The Genuine Apple iMac 27" A1312 2011 Logic Board Motherboard 639-2188 is a high-quality motherboard designed specifically for Apple iMac models. Made by Apple, this motherboard is compatible with Intel CPUs and DDR3 SDRAM memory. It is suitable for casual computing and is ideal for users looking to replace or upgrade their iMac's logic board. With its specific model number and country of origin, this motherboard ensures a perfect fit and reliable performance for your Apple iMac. Donor iMac PSU did not work, so this Logic Board is UNTESTED, comes with GPU, CPU, and an Apple HDD with UNKNOWN CONTENTS