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Black rectangular 330W laptop AC adapter with 7.4mm*5.0mm barrel connector and three-prong power cord

myVolts

myVolts 330W 19.5V 16.9A 7.4mm*5.0mm ADP-330AB D laptop AC adapter

SKU CH-VGZV-Z49CY

Delivers 330 W at 19.5 V 16.9 A via a 7.4 mm × 5.0 mm barrel connector for Alienware and Precision laptops

  • 330W output powers demanding Alienware and Precision laptops
  • 5V 16.9A matches original ADP-330AB D specifications exactly
  • 4mm × 5.0mm centre-pin connector fits listed Dell and Alienware models
  • 100–240V 50–60Hz input works on mains supplies worldwide
  • 900g unit includes a three-prong power cord in the box

330W Dell Alienware adapter

This 330-watt AC adapter delivers 19.5 volts at 16.9 amps through a 7.4mm by 5.0mm barrel connector with a centre pin. It replaces Dell part numbers ADP-330AB D, ADP-330AB B, DA330PM111, XM3C3 and Y90RR. The unit suits Alienware M18x R1 R2 R3, 17 R1 R4 R5 and X51 R2 R3 desktops plus Precision M4800 M6700 M6800 workstations. A three-prong IEC cord is included in the package.

Thermals noise and power draw

The adapter accepts 100 to 240 volts at 50 to 60 hertz, making it suitable for worldwide mains supplies. A built-in LED indicates when the unit is powered. Under normal operation the brick runs silently with no moving parts and draws only the current required by the attached system. The 900-gram housing dissipates heat through its aluminium case without active cooling.

Sustained load behaviour

During continuous high-load sessions the adapter maintains its rated 330-watt output without throttling or shutdown. The fixed 19.5-volt rail stays stable as the connected laptop or desktop draws up to 16.9 amps for extended periods. No fan noise appears because the design relies on passive convection. The unit is not intended for devices that require a different voltage, a higher wattage or an alternative connector size.

Highlights

  • 330W output powers demanding Alienware and Precision laptops
  • 5V 16.9A matches original ADP-330AB D specifications exactly
  • 4mm × 5.0mm centre-pin connector fits listed Dell and Alienware models
  • 100–240V 50–60Hz input works on mains supplies worldwide
  • 900g unit includes a three-prong power cord in the box

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the 7.4mm*5.0mm plug to my Alienware M18X R3 and what step is often missed?

Align the centre pin with the socket, push firmly until it clicks, then attach the 3-prong power cord to the adapter before plugging into the wall outlet.

Which parts of this 330W adapter will need replacement after extended use?

The detachable power cord and the 7.4*5.0mm connector tip are the only serviceable items; the sealed 900g adapter body has no user-replaceable components.

What is the first limit reached when this 19.5V 16.9A unit runs continuously at full load?

The 330W output ceiling is reached first; sustained draw above 16.9A will trigger the internal protection and shut the adapter down.

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