http://www.notebookbattery.co.nz/hp-laptop-power-adapter/503377-001-a179189.htm,

100-240 V-/5.5A , 50-60 HZ +12 Vsb==/1.3a , -12 V ==0.15A +12 Vma, HP 503377-001, adapter 1 year warranty, 30 days money back, 100% new. 30% off all products! Warranty: 12 months! Short circuit protection Meets the environment according to RoHS European Standards. All our products are certified to CE Certificate CE Approval Certificate - Approved Safety.  

HP 503377-001 508153-001 AC Power Adapter Charger

AC Input:100-240 V-/5.5A , 50-60 HZ
DC Output: +12 Vsb==/1.3a , -12 V ==0.15A +12 Vma
503377-001 508153-001 Power Adapter
Adapter Part Numbers:
511483-001 / 613764-001,611483-001 611484-001 613765-001,503377 503377-001 / 508153-001,503378-001 / 508154-001,707818-002 / 707906-001, there are many spare parts and models.
Adapter Fit Models:
HP PC8022
Here,buy it now
ES:HP 503377-001 AC adapter NL:HP 503377-001 Laptop adapter IT:HP 503377-001
DE:503377-001 Notebook-Netzteile.Das richtige HP Laptop Netzteil finden. 
We ship to the Laptop adapter around Globe [USA, Canada, UK, NZ and Ireland, Australia]. View more laptop adapter. Contact with us if any problem on selecting power adapter. Quality: Quality is our number one priority! All HP 503377-001 adapters are New! Our own quality assurance ensures a high quality standard. All HP 503377-001 laptop power adapters are 100% compatible with the original product, in most cases our batteries have even more powerful performance than the original product thanks to the advanced technologies and cell standards.
Safety: Safety is a key feature of our products. Our own safety controls guarantee the highest level of safety standards. 
Guaranty: All HP 503377-001 products have a warranty of at least 1 year. For many products, e.g. HP 503377-001 adapter, we are so confident of the quality so outstanding, due to excessive loads, can not work. In case of doubt please contact us. The statutory warranty period remains unaffected.We will be happy to answer all your questions about their respective products and all other warranties. 

Finding the Right Model of Adapter :

· Get the laptop's model number. This is usually printed on a small sticker affixed to the underside of the laptop.

· Get the power requirements for the laptop. This is also printed on a small sticker affixed to the underside of the laptop. It may also be printed near the laptop power port. Look for the amperage and the voltage required.

· Look up the model number online to find if there are compatible adapters available. The voltage and amperage of the adapter need to match the requirements of the laptop.

· Compare the connector type of the laptop adapter to any available adapters found online. They need to match to ensure that the adapter can plug into the laptop.

Wholesale and retail laptop adapter in NZ. Replacement for Acer,Apple, Compaq,Dell, FUJITSU, IBM,Lenovo,Sony and so on.

These may be you want to look for : FY632 for NEW DELL Optiplex 745/755 NH493 305W 24-pin ATX Power Supply SATA Model L305P-01 , 633195-001 for HP Power Supply FH-ZD221MGR Rev. A P/N 633195-001 , MPX3V for Dell Optiplex 390 250W Power Supply Unit , PS-5281-01VF for Lenovo ThinkCentre SFF 280watt PSU Tested LiteOn PS-5281-01VF 41A9739 36-001368 , 0T122K for Dell PowerEdge T310 tower Power Supply 375W L375E-S0 PS-5371-1D-LF ,