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Black rectangular 330W AC adapter with 7.4mm barrel connector and pin inside

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E-buy 330W AC Power Adapter for Alienware M18x R2 R3 GTX780M

SKU CH-SB8T-NBPS3

330W AC adapter delivers 19.5V 16.9A output for Alienware M18x R2 R3 and compatible Dell gaming laptops

  • Genuine 330 W replacement for Alienware M18x R2 and R3
  • Worldwide 100-240 V input suits travel and home use
  • 5 V 16.9 A output matches original ADP-330AB D specification
  • 4 mm by 5.0 mm connector with centre pin ensures secure fit
  • Compatible with Alienware 18, M6600, M6700 and X51 R2 systems

Genuine 330W AC Adapter for Alienware M18x

This genuine 330W AC adapter replaces the original Dell ADP-330AB unit for Alienware M18x R2 and R3 laptops equipped with GTX780M graphics. It delivers 19.5V at 16.9A through a 7.4mm by 5.0mm barrel connector with a centre pin. The unit accepts 100V to 240V input at 50Hz or 60Hz for worldwide use. It is supplied new with a one-year warranty.

Thermals and Power Draw in Normal Use

The adapter is rated for 330W continuous output at 19.5V and 16.9A, drawing up to 4.4A from a 100V to 240V mains supply at 50Hz or 60Hz. No fan is present, so operation is silent. Heat is dissipated passively through the black plastic enclosure during charging and gaming loads. Efficiency meets the original OEM specification for the listed Alienware models.

Build Quality and Connector Implications

The moulded black housing uses the Dell 7.4mm by 5.0mm barrel with a centre pin, matching part numbers ADP-330AB, DA330PM111 and 0Y90RR. A single mains lead is included for immediate connection. The adapter also fits Dell Alienware X51 R2 desktop, Precision M6600 and M6700 mobile workstations, and Alienware 18 and AM18x-6732BAA systems. Buyers needing a different connector size or higher wattage for newer Alienware chassis cannot use this unit.

How it compares

Measured against everything we stock in Network Adapters & RJ45 Plugs, at today’s prices. Recalculated every night.

Price $95.99
Pricier than about 89% of the 1,221 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the 7.4 by 5.0 mm barrel plug with the centre pin to my Alienware M18x R2?

Align the centre pin with the laptop's power jack before pushing the barrel in; forcing it off-centre bends the pin and breaks the connection.

What part of this 330 W adapter will need replacement first?

The AC cable and the barrel-plug strain relief are the only wear items; the sealed brick itself has no user-serviceable parts.

At what load does the 19.5 V 16.9 A output hit its thermal limit during long gaming sessions?

Continuous 330 W draw will trigger the internal over-temperature protection before the voltage rails sag.

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