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Rectangular black power brick with HP branding and barrel connector

HP

HP 609940-001 90W 19V 4.74A AC Adapter

SKU CH-QDXB-TY3GG MPN 609940-001

90W AC adapter delivers 19V at 4.74A to compatible HP ProBook notebooks including the 4320s, 4321s, 4420s, 4421s and 4720s, and meets RoHS environmental standards

  • Battery typeLithium-Ion
  • Power adapter voltage19 V
  • Power adapter current4.74 A
  • Power adapter wattage90 W
  • Main functionNotebook
  • Product colorMulticolor
  • Delivers 90 W for reliable notebook charging
  • 19 V DC output matches ProBook power needs
  • 74 A current supports full system performance
  • 110 V to 220 V input works worldwide
  • RoHS certified for reduced environmental impact

HP 90W AC Adapter for ProBook

The HP 609940-001 supplies 19 V at 4.74 A for a total of 90 W, matching the original charger shipped with select ProBook notebooks. It accepts a wide 110 V to 220 V AC input so it works on mains power worldwide.

RoHS-certified build with fixed cable

The unit carries RoHS environmental certification and is manufactured in China. A permanently attached output cable ends in the barrel connector required by the compatible ProBook models, while the detachable AC cord lets you swap plug types for different regions.

Limited to listed ProBook series

Output is fixed at 19 V DC and 90 W maximum, so the adapter cannot charge devices that need a different voltage or higher power. Compatibility is confirmed only for the ProBook 4320s, 4321s, 4420s, 4421s and 4720s; other laptops may not charge or could be damaged.

How it compares

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

Price $73.99
Pricier than about 90% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameHP
Product colorMulticolor
Product typeAC Adapter
Power
Battery typeLithium-Ion
Power adapter voltage19 V
Power adapter current4.74 A
Power adapter wattage90 W
Size & build
Shipping weight2.31 kg
Package size152 × 102 × 102 mm
More details
Main functionNotebook

Questions about this item

What output voltage and current does the 90 W HP 609940-001 adapter deliver?

The adapter supplies 19 V DC at up to 4.74 A, giving a maximum output of 90 W.

Which HP ProBook models are listed as compatible with the 609940-001 charger?

Compatible models include the ProBook 4320s, 4321s, 4420s, 4421s and 4720s.

How do you connect the 609940-001 adapter to mains power and the notebook?

Plug the supplied AC cable into a 110 V or 220 V wall socket, then insert the barrel connector into the laptop's DC-in jack.

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