Hi, I recently got a 27" ATD and also have an 27" ACD currently. I know its possible to daisy chain a 27" ACD to the 27" ATD as long as you have a thunderbolt interface device (hard disk, etc.) in the middle of the daisy chain. My question now is, what is the cheapest method of doing this? I looked at the Lacie thunderbolt drive, but at 500+, its just way too expensive for my purposes. I am looking for just the cheapest "thunderbolt interfacer" to be able to hook up an ATD and an ACD. Thanks!