I actually have been using a dell 150 or maybe it’s even a 180 watt power supply. I was traveling with mine, and got tired of diving behind my desk, so the oem power supply lives in the travel bag. You can check goodwill or Salvation Army as you may find one there. 2 options https://www.amazon.com/Alienware-Charger-19-5V-Precision-M4600/dp/B082VZB2NW/ref=mp_s_a_1_13?crid=392Y5O4BQQ8BT&keywords=dell+laptop+power+adapter+alienware&qid=1678263797&sprefix=dell+laptop+power+adapter+alienware%2Caps%2C247&sr=8-13