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Compact black rectangular power adapter with attached cable and detachable mains cord

HP

HP HSTNN-LA40 45W Power Adapter with Cord

SKU CH-JRHX-FFZNX MPN HSTNN-LA40

A genuine 45 W HP power adapter delivering 19.5 V at 2.31 A with an included cord, compatible with 100–240 V input

  • Genuine HP replacement keeps your laptop running
  • 45 W output matches original charger specification
  • 100-240 V input works worldwide
  • Built-in protection guards against voltage and heat faults
  • Includes power cord for immediate use

Genuine HP 45W AC adapter for select 15-inch laptops

This genuine HP HSTNN-LA40 power supply delivers 45 watts at 19.5 volts and 2.31 amps. It is built for compatible 15-CS and 15-DA series notebooks that require a 45W barrel-type charger. The unit includes the detachable mains cord so it is ready to use immediately.

Compact barrel connector

The adapter accepts a universal 100-240V input at 50-60Hz, making it suitable for travel across different regions. Built-in safeguards protect against incorrect voltage, short circuit and internal overheating during daily charging cycles. The barrel plug mates securely with the laptop's DC-in jack for a reliable connection.

Direct replacement for a lost

It restores full charging speed when the original supply is damaged, misplaced or no longer holds a stable output. The upgrade is worth it whenever the laptop refuses to charge, reports an incompatible adapter or the cable shows fraying near the strain relief.

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

What does the 19.5 V 2.31 A output limit in practice?

It caps the continuous power delivery to 45 W, so the laptop draws no more than that rating.

What physical connector must match the laptop for this adapter to fit?

The barrel plug on the HP HSTNN-LA40 must match the laptop's charging port diameter and pin layout.

How is the adapter installed, and what step is often missed?

Plug the cord into the brick, connect the barrel to the laptop, then plug the cord into a 100-240 V outlet; people often forget to seat the cord fully into the brick.

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