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Black rectangular HP power brick with attached cord

HP

HP HSTNN-LA40 45W 19.5V 2.31A AC Adapter with Cord

SKU CH-4HPC-D8KVE MPN HSTNN-LA40

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

  • Delivers 45 W to power compatible HP laptops
  • Accepts 100–240 V input for worldwide use
  • Includes power cord for immediate connection
  • Built-in safeguards against incorrect voltage and short circuit
  • Genuine HP part HSTNN-LA40 ensures exact fit

Genuine 45W HP AC Adapter

This genuine HP HSTNN-LA40 adapter delivers 45W at 19.5V and 2.31A for compatible HP laptops. It accepts a universal 100-240V input at 50-60Hz for worldwide use. A power cord is included in the box. The unit is supplied new.

Simple barrel-tip connection

The adapter plugs directly into the laptop's DC jack and the cord connects to any standard wall outlet. No drivers or software configuration are required for operation. The barrel diameter must match the device port or the plug will not seat. Verify the connector size before ordering.

Built-in protection circuits

Safeguards against incorrect voltage, short circuit and internal overheating regulate the output during extended sessions. The 1.1A input rating supports continuous draw without tripping the internal limits. Steady 19.5V delivery is maintained under sustained load.

Highlights

  • Delivers 45 W to power compatible HP laptops
  • Accepts 100–240 V input for worldwide use
  • Includes power cord for immediate connection
  • Built-in safeguards against incorrect voltage and short circuit
  • Genuine HP part HSTNN-LA40 ensures exact fit

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the adapter is delivering the rated 19.5V 2.31A output after plugging it in?

The adapter includes multiple smart safeguards against incorrect voltage, short circuit and internal overheating; a steady LED on the connector indicates normal operation.

What comes in the box and is a separate mains lead required?

The package includes the 45W adapter unit and a power cord, so no extra mains lead is needed.

Which part number — 845837-850, 853490-001 or 854054-001 — matches my laptop?

All three numbers refer to the same genuine HP HSTNN-LA40 45W 19.5V 2.31A adapter; choose the one listed in your laptop's service manual.

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