2011 Apple Mac mini IMAC macbook pro memory ram 8GB 4GB 16GB DDR3 1333 - AliExpress
Mac mini (Mid 2011) - Technical Specifications
A-Tech 4GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010, Mid 2011, Late 2011), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module at Amazon.com
2011 iMac 21.5-inch i5, 4GB RAM, 500GB HDD - Pre-owned | All Things Apples
Apple A1311 iMac Computer 21.5 in Core 2 Duo 3.06 GHz 8GB RAM 500GB HD Late 2009 | RecycledGoods.com