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Small black rectangular HP power adapter with attached cable and detachable mains cord

HP

HP HSTNN-LA40 45W 19.5V 2.31A power adapter

SKU CH-PENQ-Y22DF MPN HSTNN-LA40

Delivers 45 W at 19.5 V 2.31 A with 100–240 V input and includes a power cord

  • Genuine HP adapter ensures reliable compatibility
  • 45W output at 19.5V 2.31A powers your device
  • Universal 100-240V input works worldwide
  • Built-in safeguards protect against voltage and heat issues
  • Includes power cord for immediate use

Genuine HP 45W power adapter

This genuine HP HSTNN-LA40 adapter supplies 45W at 19.5V 2.31A for compatible HP laptops. It accepts a wide 100-240V input range for worldwide use. A power cord is included in the box. Buyers needing higher wattage for larger workstations should verify their device requirements first.

Continuous 45W delivery with smart safeguards

The unit maintains its rated 45W output during extended charging sessions rather than only in brief bursts. Built-in protection guards against incorrect voltage, short circuit and internal overheating. These safeguards help preserve both the adapter and the connected notebook over long periods. The 50-60Hz input frequency handles mains variations steadily.

Durable construction with included power cord

Each adapter is inspected and cleaned to meet manufacturer specifications before shipment. Minor cosmetic wear may be present on the housing but does not affect function. The package includes the necessary AC power cord for immediate connection. Users with proprietary barrel tips not matching this model will need a different adapter.

How it compares

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

Price $17.99
Typical for this category: the median of 1,761 items is $18.99.

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Specifications

No published specifications for this item yet.

Questions about this item

How hot or noisy does the HSTNN-LA40 get when it runs continuously?

The brick has no fan, so it stays silent; it only warms to normal operating temperature while delivering up to 45W.

What must I already own to use this adapter?

You need an HP laptop that accepts a 19.5V 2.31A barrel input; the package includes a detachable mains cord.

Will the 100-240V 50-60Hz input work with older HP chargers I still have?

Yes, the wide input range matches legacy HP power supplies, so you can swap cords or travel kits without voltage issues.

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