http://genuineacadapter.com/power-adapter-fit-hp-elitebook-8570w-hp-19v-474a-90w-7450mm-p-10859.html

Power adapter fit HP EliteBook 8570w HP 19V 4.74A 90W 7.4*5.0mm

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$25.07

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Power adapter fit HP EliteBook 8570w

Power AC adapter fit HP EliteBook 8570w notebook, brand new, 100% compatible with good quality, and free from defects in material and workmanship. 30 Days Money-Back, 12 months warranty. 

Fit with following laptop:

HP EliteBook 8570w

Specifications:
• Type: Power AC Adapter
• Input Voltage: AC 100-240V~50/60HZ
• Output Voltage: DC 19V 4.74A
• Max. Output Power: 90W
• Connector Size: 7.4*5.0mm
• Manufacture Guaranty: 12 Months
• Operate Environment: Please keep the environment cool and dry!