1. universal laptop slim adapter auto switch 90w with 12 tip

Model: Rk90w Output voltage: DC15V/16/18.5/19/19.5/20v
Input voltage range: AC100-240VAC Output power 90W(max)
Input power: 90 w(max) Output current: 4.5A(max)
Input current: 10A(max) Efficiency: 90 %(Type)
This model is an universal Home, use for Laptop switching-mode AC to DC power supply, operation at input AC100-240V, output DC15V/16/18.5/19/19.5/20v, output current 4.5 Amp max, With many protections functions, such as output over voltage.

Protection, output Short Circuit protection.
1. Please select output voltage of the AC adapter to suit your notebook Computer first, output voltage 15V/16/18.5/19/19.5/20v marked on the adapter conector plug
2. Select a DC connecto plug to suit your DC connector Jack of computer from 8 PCS DC connecter of accessory, please make sure that the DC Conector plug connect the adapter wire with correct polarity, correct Positive connect marked on the adapter body
3. Insert the AC cable mains supply of AC100 to 40v

CAUTION:
For AC 100-240VAC 50/60Hz
Dont use this adapter with device that exceeds 90w
Dont attempt to open, service, or repair the adapter
Dont change the output voltge when the adapter is working!
Always turn off notebook before your connect or disconnect the adapter

2.For DELL PA-2E 19.5V 3.34A AND For DELL PA-3E 19.5V 4.62A AC ADAPTER