can I use 120W power adapter instead of 135W power adater on HP EliteDesk 800 g1?

[jthomasv]

can I use 120W power adapter instead of 135W power adater on HP EliteDesk 800 g1?

[RobBenjamin]

Assuming the adapter is genuion HP,  If you have it I would say try it and see what happens.  I believe the genuion OEM adapters have some smarts in them.  I have used high and low capacity ones with my Zbook.  The lower ones report they are not optimal, but still work.  We have a lot of EliteDesk computers.  I've gotten them switched before with out damage.  Like plugging a 65W into a machine that normaly uses a 135W.  Machine just did not turn on.

It also depends on how much the unit uses and options.  If it has a fast processor, maxed on memory, CD drive, and powering lots of USB devices, then yeah you might have a problem.  FYI each USB port is capable of supplying 5 Vdc at 0.5 amps.  So if 6 USB ports were used at max, that would be 15 watts.

[Grizzlys2k]

You can try it and see if you are experiencing any issues...like drop in performance...or like the coleague said below...it wont start.