I needed a power supply for my customers computer, which is relatively old or older and came across the super notebook site. I bought this power supply as an exact replacement for an HP computer that had on a 200W supply system. There is not ANY wiggle room at all in this PC for upgrades or new items, because it is a factory built PC, so since I saw on the supernotebook site that this power supply was an exact replacement; I was thrilled; Whooooo! ANYWAY it only took about 30 min. To replace and clean the computer and all went well and the computer works just fine now. My customer is SOOOOO very happy and they did not have to spend any extra money or go anywhere else. I can say supernotebook.com has all the special stuff you'll ever need!