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Black rectangular power brick with 7.4mm barrel connector and integrated cable

DELL

DELL DA90PM111 90W AC Adapter 7.4mm x 5.0mm Tip

SKU CH-AE5Q-8BHJE MPN DA90PM111

A 90 W laptop charger accepting 100–240 V input and delivering 19.5 V at 4.62 A through a 7.4 mm × 5.0 mm barrel tip for compatible Dell models

  • 90 W output powers demanding Dell laptops
  • 100 V–240 V input works worldwide without a converter
  • 4 mm × 5.0 mm barrel fits listed Inspiron, Latitude, Vostro and Alienware models
  • 5 V / 4.62 A delivery matches original Dell specification
  • New genuine Dell unit replaces part 0MK947 exactly

Dell 90W AC adapter for 7.4 mm barrel

This 90 watt power supply accepts 100 V to 240 V input at 50 Hz to 60 Hz and delivers 19.5 V at 4.62 A through a 7.4 mm by 5.0 mm barrel connector. It replaces Dell part number 0MK947 and model DA90PM111. The unit suits owners of listed Alienware, Inspiron, Latitude, Vostro, XPS and Chromebook models needing an exact tip match.

Thermals noise and power draw in normal use

The adapter draws up to 1.5 A from the mains and converts it to 90 W DC output with standard efficiency for a 19.5 V brick. No active cooling is present so operation is silent. The casing warms under sustained load but stays within normal limits for a 90 W class supply.

What the bundled accessories

No cables, software or additional tips are included in the package. Buyers who need a different barrel size or a longer AC lead must source those separately. The adapter alone restores charging for compatible systems without altering any laptop settings.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $32.99
Pricier than about 57% of the 27,790 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the 7.4 mm x 5.0 mm tip to my Dell laptop?

Align the large barrel connector with the DC-in jack and push straight in until it seats firmly; forcing it at an angle bends the centre pin and causes intermittent charging.

What part of this adapter wears out first and needs replacement?

The output cable near the barrel connector frays from repeated bending; inspect the sheath regularly and replace the unit if conductors become exposed.

At what load does the adapter hit its thermal limit during continuous use?

Sustained output at 19.5 V and 4.62 A (90 W) will trigger the internal over-temperature protection first, causing the unit to shut down until it cools.

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