Original Lenovo 90W Charger Notebook Adapter Power Supply Multiple Charging Protection For Lenovo Notebook 20V 4.5A 100-240V 
Features:
* Square interface within a needle is compatible with many of lenovo notebooks.
* Smart control chipset offers 9-layer electricity protection.
* Anti high temperature,high-end copper cord core, plug and use.   
* High durability and beauty provided thanks to the matte housing and exquisite logo.
9-layer Charging Protection:
Over-charging Protection/ Over discharging protection/ Over power protection/ Over current protection/ Over voltage protection/ Short Circuit protection/ Lightning protection/ Temperature protection/ Electromagnetic field protection
Compatible with many of Lenovo Notebook Models:
Flex10/ S510P/ E540/ E530/ G410/ G490/ G510/ B4400/ K245
N40/ N50/ N410/ S41/ S500/ Y50/ Y70/ B40/ B50
M4400/ M5400/ M50/ N4070/ U41/ Z40/ N4030/ U430/ E55/ L450
Xiaoxin V1070/ Xiaoxin V3000/ Xiaoxin V2000/ Xiaoxin V4000/ Xiaoxin V1000
Specification:
Brand: Lenovo
Product: Notebook Adapter
Output Voltage: 20V 4.5A
Input Voltage: 100-240V 1.5A 50-60A
Output Power: 90W
Output Interface: Square/ with needle
Input Plug: Plum Three-hole Type
Size: Approx. 15.4*4.5*2.7cm
Weight: Approx. 350g
Package Weight: Approx. 550g
Package Size: Approx.  17* 6*4.5cm/ 6.69*2.36*1.77in
Package List:
1 * Charger