Lenovo Notebook Power Adapter / Lenovo Laptop Charger
Replacement Adapter with Square Plug
Frame: 11.0x4.6mm, Hole: 6.0x3.0mm, with Center Pin
PNC-SQ110-xxx

Option (s):

• 20V 3.25A 65W
  Model: ADLX65NLC3A, LC PN: 36200607, LI PN: 45N0257, FRU PN: 45N0495, PA-1650-72
   

• 20V 4.5A 90W