Hi, i am confused: is it really impossible to replace the plain HD (aka non-fusiondrive) of the budget i3-iMac with an SSD, as user „Anti Spam“ wrote? Is the connector for the sata HD incompatible with an SSD-Drive, or is there any other problem?

WATCH IT! When pulling out the hard drive or putting in the new one, stay clear of the strong magnets that hold the glass pane in place. I was so focused on following those steps closely, and when I had the HDD clear I kind of relaxed a bit too much and – "CLONK" – the magnet pulled the HDD and ruined it.