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Compact black rectangular AC adapter with blue-tip barrel connector and detachable mains lead

myVolts

myVolts 45W 19.5V 2.31A AC Adapter Blue Tip

SKU CH-5CXT-76D7K

45 W 19.5 V 2.31 A charger with 4.5×3.0 mm blue tip for HP Chromebook, EliteBook, Pavilion, Spectre, Envy, Stream, ProBook and ZBook models

  • Worldwide voltage input 100-240V for travel use
  • 45W output matches original HP charger specifications
  • Blue tip 4.5x3.0mm connector fits listed HP models
  • Replaces multiple HP part numbers including HSTNN-CA40
  • Supports HP Elitebook, Pavilion, Spectre, Envy, Probook, Zbook series

45W 19.5V HP AC Adapter

This 45-watt power supply delivers 19.5 volts at 2.31 amps through a 4.5 by 3.0 millimetre blue-tip connector. It replaces original HP chargers for a wide range of Chromebook, EliteBook, Pavilion, Spectre, Envy, Stream, ProBook and ZBook models. The unit accepts 100 to 240 volts input at 50 to 60 hertz for worldwide use.

Blue-tip connector fit and daily handling

The 4.5 by 3.0 millimetre barrel plug matches the blue-tip interface found on the listed HP notebooks, ensuring a secure connection without adapters. A 100 to 240 volt input range means the same brick works at home or abroad. The compact form factor keeps cable clutter low on a desk or in a travel bag.

Replaces original HP part numbers

This adapter substitutes for HP part numbers including HSTNN-CA40, HSTNN-DA40, PPP009C, 741727-001, 740015-001, 709985-001 and 693711-001 among others. The upgrade is worthwhile when the original charger is lost, damaged or no longer holds a stable output. Buyers needing higher wattage for larger workstations or a USB-C interface should look elsewhere.

Highlights

  • Worldwide voltage input 100-240V for travel use
  • 45W output matches original HP charger specifications
  • Blue tip 4.5x3.0mm connector fits listed HP models
  • Replaces multiple HP part numbers including HSTNN-CA40
  • Supports HP Elitebook, Pavilion, Spectre, Envy, Probook, Zbook series

Specifications

No published specifications for this item yet.

Questions about this item

What output voltage and current does this 45 W adapter deliver through its 4.5 × 3.0 mm blue-tip connector?

It supplies 19.5 V at 2.31 A, giving a maximum of 45 W over the 4.5 mm by 3.0 mm barrel plug that carries the blue tip identifier.

Which HP laptop series accept the 4.5 × 3.0 mm blue-tip connector on this charger?

Compatible ranges include EliteBook 725, 745, 755, 820, 840, 850 G3 through G5, ProBook 430, 440, 450, 470, 640, 645, 650 G3 through G5, Pavilion x360 11, 13, 14, 15, 17, Spectre x360 13 and 15, Envy x360 13, 15, 17, Stream 11, 13, 14, ZBook 15U G2 through G6 and Chromebook 11, 14 models.

How do you connect the adapter safely, and what common mistake should be avoided?

Plug the IEC mains lead into the brick, insert the 4.5 × 3.0 mm blue-tip barrel firmly into the laptop’s DC jack, then connect the mains plug to a 100–240 V socket; the frequent error is forcing the tip in upside-down, which can bend the centre pin.

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