RE: Upgrade Alienware X51 power supply
This PSU is for internal use, while the PSU on the X51 is an external AC adapter. To be able to install this PSU you'll have to do several modifications to the system, including the chassis and the power connectors.
This is definitely not a supported upgrade for this system as the Motherboard wasn't built for 600W. If you decide to try the upgrade the risks won't be covered in warranty.
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