Power supply polarities

Hello, everyone,

What is the power supply polarity for WD Elements external (desktop) hard drives (mine is 3TB)? Is the coaxial connector center-positive or center-negative?

Thank you for whatever help you can give.


The center has a positive polarity.

Thank you. WD could make things easier for everyone by putting that information in the specifications documents available through the website.

Thanks again,

Col. Bob Jones

…and better still marking it on the casing together with the voltage, amperage and wattage - instead of just “DC IN”!

Hi lefty_kiwi ,

Sure, we will definitely take it as a feedback and will surely work on it.