A-Tech 8GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module at Amazon.com
Amazon.com: DY-tech 2nd Hard Drive HDD SSD Caddy for iMac 20 21.5 27 inch 2009 2010 2011 Early Late : Electronics
Amazon.com: De Young 2nd HDD SSD Hard Drive Optical Bay Caddy Frame for iMac 21" 24" 27" Late 2009 2010 2011 2012 2013 2014 SuperDrive + USB 2.0 Cable : Electronics