"Quiet, compact, Works With My Mac"4.0 starson by JCabva
Pros: Easy, quick setup. Mac recognized it right away. Plenty of space to back up my music and transfer it to my other iMac. Doesn't take up much space since it is vertical so squeezed it in beside my other external drives. Automatically turns off.
Cons: Would like a power switch somewhere. Would like 3.0 or firewire connectors since it is compatible with those, they are extra. Works on my Mac but had to reformat the drive so I could use it with my backup (no big deal - took 30 seconds).
Summary: Overall I like the cool little box. Works well, mine didn't get hot, silent as a mouse, light is unobtrusive, and has a light meter letting you know how much space you have left on the drive. Works with my iMac. Price was competitive for 2TB. Maybe Costco can throw in the USB 3.0 or firewire connector next time?