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Black rectangular 240W AC adapter with US plug and 7.4*5.0mm connector

xuanlan

xuanlan 240W AC Adapter 19.5V 12.31A 7.4*5.0mm US Plug

SKU CH-94Z4-MWZD9

240 W AC adapter delivers 19.5 V at 12.31 A through a 7.4 mm by 5.0 mm barrel connector for Dell Alienware 15 and 17 models

  • TypeAC Adapter
  • 240 W output powers demanding Alienware 15 and 17 laptops
  • 5 V 12.31 A delivery matches original charger specifications
  • 4 × 5.0 mm connector fits listed Dell models exactly
  • 100–240 V input works on mains worldwide
  • Built-in over-voltage, over-temperature, short-circuit and over-current protection

240W AC Adapter for Dell Alienware

This 240 watt AC adapter delivers 19.5 volts at 12.31 amps through a 7.4 by 5.0 millimetre connector. It is built for Dell Alienware 15 and 17 series laptops from 2018 including the R1, R4, R5 and R6 models. The unit accepts 100 to 240 volt input at 50 or 60 hertz and ships with a US power cord.

Replacing a lost or failed 240W charger

It replaces an original Dell adapter with part numbers such as LA240PM160, LA240PM180, P10E, P20E, P22F, P29E, P30F, P42F, P18E or P69F. The upgrade is worth it when the original brick no longer supplies stable power or the cable is damaged. It is not for buyers who need a lower wattage unit or a different connector size.

Straightforward barrel plug installation

Installation consists of connecting the supplied US power cord to the adapter and inserting the barrel plug into the laptop. The connector polarity and dimensions must match the 7.4 by 5.0 millimetre specification. What usually goes wrong is using an adapter with the wrong tip size or insufficient wattage, which can prevent charging or trigger power warnings.

Highlights

  • 240 W output powers demanding Alienware 15 and 17 laptops
  • 5 V 12.31 A delivery matches original charger specifications
  • 4 × 5.0 mm connector fits listed Dell models exactly
  • 100–240 V input works on mains worldwide
  • Built-in over-voltage, over-temperature, short-circuit and over-current protection

Specifications

TypeAC Adapter

Questions about this item

Does the 7.4*5.0mm barrel connector fit my Dell Alienware 17 R5?

Yes — the 7.4*5.0mm tip matches the charging port on Alienware 15 R1 R4 R5 and Alienware 17 R1 R5 R6 models listed in the compatibility data.

What is the correct order to connect the 240W adapter so the laptop recognises it?

Plug the US power cord into the wall first, then insert the 7.4*5.0mm barrel into the laptop; reversing the sequence can prevent the 19.5V 12.31A handshake from completing.

When should I replace the US power cord that ships with this 240W unit?

Replace the cord if the plug blades become loose, the insulation cracks, or the brick overheats despite clean vents — typically after several years of daily use.

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