How to Install a 2.5-inch SSD in the SSD Drive Bay of a 27-inch iMac Mid 2010 (Updated) - YouTube
iMac SSD nachrüsten - iMac SSD einbauen
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 :
Installing additional SSD in Mid-2010 27" iMac
OWC DIY Drive Upgrade/Install Kits for Apple iMac Models
How To Upgrade HDD on Old iMac 27 Inch 2010 Faster SSD Samsung SATA 2.5 - YouTube