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Apple iMac 21.5-Inch Core i3 3.2 Mid 2010 4GB RAM High Sierra 500GB HD Disk CD | eBay
Kit de 16GB 2X8GB PC3L-10600 DDR3 Ram para iMac 21.5 pulgadas A1311 Mid-2010 Mid-2011 | eBay
Amazon.com: Timetec 8GB KIT(2x4GB) Compatible for Apple DDR3 1333MHz PC3-10600 for Mac Book Pro (Early/Late 2011 13/15/17 inch), iMac (Mid 2010, Mid/Late 2011 21.5/27 inch), Mac Mini(Mid 2011) RAM Upgrade : Electronics
Installing additional SSD in Mid-2010 27" iMac
How to Upgrade the RAM in Your iMac
Install memory in an iMac - Apple Support
A-Tech 32GB (4x8GB) RAM for Apple iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
How to Upgrade the RAM in Your iMac
Install memory in an iMac - Apple Support
Used Apple iMac 21.5-inch 500GB Hard Drive 4GB RAM I3 Proessor (Mid 2010) - ZD Laptop Service Centre
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET