8GB Total. 2PCS OF  4GB PC3-8500 204 pin SODIMM DDR3 1066MHz Major brand memory.

Major brands only.Guaranteed and tested.Warranty: Lifetime Warranty. BY Computer Memory Solutions

Manufactured by Computer Memory Solutions

COMPATIBLE WITH:

Apple Mac mini "Core 2 Duo" 2.4 (Mid-2010)

Mid-2010 - MC270LL/A - Macmini4,1 - A1347 - 2364

Originally, both the official and actual maximum RAM was 8 GB. However, as confirmed if running OS X 10.7.5 or higher, updated with the latest EFI, and equipped with proper specification memory modules, this model can support up to 16 GB of RAM.