Logic Board





  • Replacement logic board only compatible with the iMac 21.5" A2116 (2019) with Retina 4K LCD display assembly.

What's Included

  • Depends on option selected.

Identifying Numbers

  • APN : 661-12487, 661-12491, 661-12495, 661-12536

    Apple Part Numbers

    • Created for internal Apple use.
    • Never visible on the item.
  • PPN : 820-01237-07, 820-01237-A

    Printed Part Numbers

    • Created by manufacturers during production.
    • Always visible on the item.

Tech Specs

  • Onboard CPU: Intel 3.6GHz Core i3-8100, 3.0GHz Core i5-8500, or 3.2GHz Core i7-8700
  • Onboard GPU: AMD Radeon Pro 555X (2GB), Radeon Pro 560X (4GB) or Radeon Pro Vega 20 (4GB)



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iMac 21.5" A2116
  • iMac19,2 Retina 4K Early 2019: MRT32LL/A (3.6 GHz Core i3)
  • iMac19,2 Retina 4K Early 2019: MRT42LL/A (3.0 GHz Core i5)
  • iMac19,2 Retina 4K Early 2019: BTO (3.2 GHz Core i7)