For Macs which can only boot from firewire, this makes a great backup drive, but I can use it on any standard USB system as well. Powers via USB "Y" or usb to plug. The only limitation is the SATA connector is on the board with little clearance between which works for hard drives but not CD/DVD/BR drives (I have another USB drive that has everything in the small back board).
- Would you recommend this to a friend? Yes