Amazon.com: OWC 2.0TB HDD Upgrade Kit Compatible With 2009-2010 iMacs, Includes: Thermal Sensor, Tools, 2.0TB Hard Drive : Electronics
Install SSD iMac 2011 - How-To DIY Guide Tutorial
My 12 y/o son is so excited. Found him a pristine Mid-2010 27" iMac for $100. Going to give it the SSD upgrade but he's stoked to start recording music with it :
27" iMac 2010 einfach aufrüsten Festplatte/SSD und CPU - YouTube
How To Upgrade HDD on Old iMac 27 Inch 2010 Faster SSD Samsung SATA 2.5 - YouTube