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Black rectangular AC adapter with 7.4mm by 5.0mm barrel connector and detachable power cord

myVolts

myVolts 19V 4.74A 90W AC Adapter 7.4mm*5.0mm

SKU CH-D4AA-DEEC7

90 W AC adapter with 7.4 mm × 5.0 mm connector powers compatible HP EliteBook, ProBook and Compaq laptops from 100–240 V mains

  • Delivers 90 W to power demanding HP EliteBook models
  • 4 mm × 5.0 mm connector fits listed HP laptops exactly
  • 100–240 V input works on mains worldwide
  • Backward compatible with 65 W and 45 W HP units
  • Includes AC adapter and matching power cord in box

What this adapter powers

This 90 W AC adapter supplies 19 V at 4.74 A for a long list of HP EliteBook, ProBook, Compaq and Pavilion notebooks that use a 7.4 mm by 5.0 mm barrel connector. It also works with devices rated for 65 W or 45 W at 18.5 V or 19.5 V because the output is backward compatible. The unit accepts 100 to 240 V input at 50 or 60 Hz for worldwide use.

Installation and common issues

Connection is straightforward: plug the IEC power cord into the brick, insert the barrel tip into the laptop’s power port, then connect to mains power. The only fitment problem occurs when the laptop requires a different barrel size; the 7.4 mm by 5.0 mm tip will not seat in smaller or larger ports. Verify the connector dimensions on the original charger before ordering.

Limits of the 7.4 mm barrel interface

The barrel connector carries only DC power and cannot transmit data or negotiate higher voltages beyond the fixed 19 V output. Polarity is fixed with centre positive, so reversing the tip is not possible without an adapter. Maximum deliverable power is 90 W; systems that demand more current will not charge at full speed.

Highlights

  • Delivers 90 W to power demanding HP EliteBook models
  • 4 mm × 5.0 mm connector fits listed HP laptops exactly
  • 100–240 V input works on mains worldwide
  • Backward compatible with 65 W and 45 W HP units
  • Includes AC adapter and matching power cord in box

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the adapter is delivering the correct 19 V 4.74 A output after I plug it in?

The brick should power the laptop and charge the battery without overheating; a multimeter on the 7.4 mm × 5.0 mm tip should read about 19 V DC when unloaded.

What comes in the package and is a mains lead included?

The box contains the 90 W AC adapter and a matching HP laptop power cord, so no separate cable is required.

My EliteBook needs a 7.4 mm × 5.0 mm tip — is this the only version sold?

Yes, this model is built specifically for the 7.4 mm × 5.0 mm barrel connector used on the listed EliteBook, ProBook and Compaq series.

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