Been a fan of this site your a couple of years and finally became a member. Bought my iMac back in August and have been wishing since that it had an esata or USB 3.0 port. Lately I have been researching the different options I had for esata and it seemed natural to use the 3rd sata port that is on the 2010 iMac logic board, which would be used for an installed SSD. Spent less than $6.00 for a sata to esata "adapter" on eBay and 2 hours later I have a working esata port. Now I just need to find some benchmarking software to test the speed. Had some reservations about doing this at first because it is not like popping open the case on a pc, but all went well.