I have a late 2012 iMac 27" with the 768GB SSD and no internal HD. I have already upgraded to 32GB RAM and I want to add a 6TB HD (something like this:http://www.newegg.com/Product/Produ...14-Index-_-InternalHardDrives-_-22178520-L06B) or the WD 6TB (http://www.bhphotovideo.com/bnh/con...D4O9QcoMLlGHDEhoCAjXw_wcB&Q=&is=REG&A=details) to get rid of 2 external USB3 drives. I tried to find videos from OWC and youtube but most of them are about replacing an existing HD. Is there enough space next to the 768GB SSD? Are there any extra SATA connectors available? Has anyone tried to add this 6 TB Seagate (non-7200rpm) drive to a 27" iMac late 2012? Thanks for any help.