Power Supply

Information about the Power Supply for Surface RT/2/Pro/Pro2



Electrical Characteristics

RT / 2

24W (12V / 2A)

Pro / Pro 2

48W (12V / 4A)

Both the original RT/ RT2 charger and the newer Surface Pro chargers can be used on the RT and RT2, but the newer ones will not charge faster.

Technical Info

Good link explaining the various differences between the Surface platform PSU's https://dancharblog.wordpress.com/2016/12/10/surface-book-pro-3-pro-4-and-docking-station-power-supplies/


24 Watt / 12V (12.3V at the peak) / 2A (Shiped only with sRT/sRT2)

Further information

SurfaceRT and RT2 PSU pinouts http://thomsoneu.blogspot.com/2014/06/microsoft-surface-power-plug-pinout.html http://thomsoneu.blogspot.com/2020/05/rebirthing-surface-pro-2.html


If the LED light on your Surface charger is blinking, flashing, off, or on (but your Surface still isn’t charging), here’s what to do:

Check cables and reset your power supply unit

Disconnect the charger from your Surface, unplug the power cable from the electrical outlet in the wall, and then disconnect any USB accessories. Wait 10 seconds. After that, clean everything with a soft cloth, and check for any damage. (Be sure to replace damaged cables.) Plug the charger back into the electrical outlet and your Surface.

Note: After you unplug the charger from your Surface and the wall, make sure to wait 10 seconds. This step resets the charger.

Plug it in the other way

Flip the charger 180 degrees, and check to see if the LED light comes on and if your Surface starts charging again.