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Black rectangular HP 45W AC adapter with 4.5x3.0mm tip and detachable power cord

HP

HP HSTNN-LA40 45W AC Adapter 741553-850 742436-001 4.5x3.0mm with Cord

SKU CH-ED9K-GGWQT MPN HSTNN-LA40

45 W AC adapter with 4.5×3.0 mm tip, 100–240 V input and power cord included

  • Genuine HP charger ensures reliable compatibility
  • 45 W output powers supported HP laptops
  • 100-240 V input works worldwide
  • 5 × 3.0 mm barrel fits matching ports
  • Includes power cord for immediate use

Genuine HP 45W AC Adapter

This genuine HP power supply delivers 45 watts at 19.5 volts and 2.31 amps through a 4.5 x 3.0 mm barrel connector. It accepts a universal 100 to 240 volt input at 50 to 60 hertz, making it suitable for travel or office use. A matching power cord is included in the box. The unit is supplied new and built to original manufacturer specifications.

For HP laptops requiring 45W 19.5V input

Users with compatible HP notebooks that specify a 19.5 volt, 2.31 amp power requirement will find this adapter a direct replacement. Buyers whose devices demand a higher wattage, a different voltage, or an alternative connector size should look at a different power supply. The adapter is not intended for hardware that uses USB-C Power Delivery or proprietary docking connectors.

Steady 45W output under continuous load

The adapter maintains its rated 45 watt output during extended charging sessions without thermal throttling. Internal safeguards protect against incorrect voltage, short circuit, and internal overheating during sustained operation. The unit runs reliably across the full 100 to 240 volt input range at 50 to 60 hertz.

How it compares

Measured against everything we stock in Other Adapters & Couplers, at today’s prices. Recalculated every night.

Price $19.99
Pricier than about 55% of the 1,761 comparable items (median $18.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does the laptop I want to power already have a 4.5x3.0mm barrel jack?

Yes — this adapter ends in a 4.5 mm outer by 3.0 mm inner barrel connector, so the notebook must accept that exact tip size.

Will the 19.5 V 2.31 A output safely replace an older HP charger rated at the same voltage?

If the original supply also delivers 19.5 V and at least 2.31 A, this 45 W unit will work; a lower-current brick could overheat.

How can I confirm the adapter is operating correctly once plugged in?

The laptop charging LED should light and the battery icon must show it is receiving 19.5 V at up to 2.31 A.

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