External interface - usb 3.0 (compatible with usb 2.0), often featuring usb-c or usb-a.
internal interface - sata i/ii/iii (\(3.5\text{"}\) hdd or ssd).
data transfer speed - up to \(5\text{ gbps}\) (\(625\text{ mb/s}\)), commonly realizing \(300+\text{ mb/s}\) with uasp support.
capacity support - typically supports high-capacity drives, often listed up to \(10\text{tb}\), \(16\text{tb}\), or \(20\text{tb}\)+.
power supply - required external 12v/2a or 12v/3a ac adapter.
material - aluminum alloy for superior heat dissipation or abs plastic.
compatibility - windows, mac os, linux, with plug-and-play functionality.
features - often include led status indicators, on/off power switch, and auto-sleep mode.