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Sony VPCZ21AGX Power Adapter
When purchasing a replacement AC adapter, selecting the Sony OEM charger will probably be the safest way to go. If you decide to buy an non-Sony adapter, please check on both the voltage and amperage output. Because Sony has been known to use a single AC adapter that powers multiple other machines, be certain you select the correct one for the VPCZ21AGX model. The Sony VPCZ21AGX AC adapter is responsible for two things, to charge up the main battery and powering the laptop. A universal AC adapter is another possibility if you absolutely need to.
Signs your power adapter will eventually need to be replaced
- Most Sony AC adapters will get warm to the touch when plugged in for 10 minutes or more
- Your Sony battery refuses to charge up whatsoever
- The unit will not operate using just the AC power adapter
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