Description

90W charger for HP Compaq Presario CQ57-339WM. Provides 19V / 4.74A for reliable and efficient charging. Perfect replacement power supply for your HP laptop.

Fit with following laptop:

HP Compaq Presario CQ57-339WM

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!

Tips for how to choose the right power adapter/charger for your laptop:

1.  Please make sure the power adapter's Output & Connector Size are matching your original Adapter's.
   
2.  Output Voltage and polarity must match with your old adapter.
3.  Output Current is not as critical as output voltage, you could select either same or higher output current adapter.
4.  If the previous three notes are the same as your adapter, you can be sure our adapter is compatible, even if your model is not listed.
5. You can check with the Output Voltage and Output Current on the label of your original charger or the bottom/back of your laptop. As to the polarity (connector size) you can measure it or compare with ours.

If you are not sure, please don't hesitate to contact us.