USB powered HDD
USB powered (external)
— hard drives with this feature receive the power they need to operate through the same USB connector through which data is exchanged with the computer. This makes them easy to connect with a single cable, and because they don't require an electrical outlet, they're well suited for use with laptops. However, note that the power supplied by the USB port may be different, and in some cases it may not be enough — for example, if the drive is connected via a USB hub at the same time as other devices, or if the drive is with a later version of the connector (USB 3.0 or 3.1) connects to a USB 2.0 port.USB powered (external) | clear | Save List |