Both 3.5" and 2.5" SATA HDDs of up to 2TB capacities are supported and it comes with an AC Adapter which I would imagine is only required in conjunction with larger more power demanding mechanical HDDs.
Source: TweakTown
Both 3.5" and 2.5" SATA HDDs of up to 2TB capacities are supported and it comes with an AC Adapter which I would imagine is only required in conjunction with larger more power demanding mechanical HDDs.