8GB Total. Two 4GB PC3-8500 204 pin SODIMM DDR3 1066MHz Major brand memory.

Major brands only.Guaranteed and tested.Warranty: Lifetime Warranty.

Manufactured by MAJOR BRAND

COMPATIBLE WITH:

Apple Mac mini "Core 2 Duo" 2.53 (Late 2009)

Late 2009 - MC239LL/A - Macmini3,1 - A1283 - 2336

By default, 1 GB is installed as a single module (MB463LL/A) and 2 GB is installed as two 1 GB modules (MB464LL/A). Officially, this model is capable of supporting 4 GB of RAM, but as first reported by MacminiColo, this model unofficially can use 8 GB of RAM after applying EFI Firmware Update 1.2.