It is an Original Sony PS3 Slim Power Supply Unit PSU EADP-220BB PPS
Not Brand New, Taken from the Slim Console, tested in full working condition
The best way to check is that you open your PS3, make sure it's the same one.
Four Pins
If your PS3 will not turn on at all and you don't even see the red light on the front of the system, this part may be all you need. you can change it with this newer power supply model which does not got hot.