Oh, come on...opening an iMac is a piece of cake! I'm looking at mine right now and...oh, wait. Unfortunately eSATA won't work. If it's not a direct SATA port connection on the motherboard the only other option is a PCI SATA card. Again, with the December manufacture date...plus the EURS being an A/V dedicated drive my bet is you won't have to worry about the Intellipark setting.