Guaranteed compatible upgrades for:

Apple iMac 2009 (Early) Core 2 Duo 2.66 GHz 20-inch (iMac9,1)

System Specifications
Maximum Memory:
  • 8GB
  • 2 Sockets
Standard Memory:
  • 2GB (Removable) or
  • 4GB (Removable)
  • Intel Core 2 Duo 2.66 GHz
Bus Architecture:
  • SSD - SATA 2.5-inch 9.5mm
Mfr's System P/N's:
  • MB417LL/A; MB417T/A; MB417X/A; MB418BZ/A; MB418LL/A; MB418T/A; MB418X/A; MB419LL/A; MB419T/A; MB419X/A; MB420LL/A; MB420T/A; MB420X/A
Upgrade Path:
  • Virtually any configuration up to 8GB of RAM can be reached using any combination of 1GB, 2GB and 4GB modules.