Dell Part Number: PA-10 

Features/Specifications
Input Voltage Range: AC 100V - 240V
Output Voltage: DC 19.5V
Output Current: 4.62A
Power: 90 Watt

Product details
This power supply is suitable for use with all Dell laptops that require a PA-10 family power supply (It will say on the bottom of the laptop) 

Also compatable with PR01X docking station. 

Inspiron 8500 8600 9200
Latitude D400 D410 D505 D510 D600 D610 D800 D810
Precision M60 M70