Model:Lenovo90wSquare
 
Specification:
Output: 20V 4.5A 90W
 
Input :100-240V 50/60Hz 
 
Connecter size:  Square with central pin inside
 
Outlet:  3-prong
 
Warranty: 1 year
 
 
Compatible with :
45N0236 45N0237 45N0238 45N0239
0B46994 0B46995 0B46996 0B46997 0B46997 0B46998 0B46999
0B47000 0B47001 0B47002 0B47003 0B47004 0B47005 0B47006 0B47007 0B47008 0B47009
 
 
 
Compatible with laptop:
Lenovo ThinkPad X1 Carbon series
Lenovo ThinkPad E540,S500,E431,E531,S431 series
Lenovo / Thinkpad IdeaPad Touch S410P S500
Lenovo ThinkPad UltraBook L440 L540 P50S
Lenovo IdeaPad Z510 Notebook PC
Lenovo IdeaPad S210 Touch Notebook
Lenovo Essential G700 Notebook
Lenovo Essential G710 Notebook
Lenovo ThinkPad G405 G500 G505 G510 G700 G710 V1000 V2000 T440 L440 E440
 
yoga13 E431