HP 45W Smart Pin 4.5mm Adapter

45W · HP Smart Pin (4.5mm barrel)

The HP 45W Smart Pin 4.5mm Adapter is a 45W replacement charger that connects via the HP Smart Pin (4.5mm barrel) using HP Smart Pin (DC barrel). It is suitable for HP only laptops rated 45W or below.

Wattage
45W
Voltage
19.5V DC
Amperage
2.31A
Connector
HP Smart Pin (4.5mm barrel)
Connector size
4.5mm x 3.0mm, blue tip, centre pin
Protocol
HP Smart Pin (DC barrel)
E-marked cable required
No
Risk level
medium
Verification
verified

Safety information

Higher-wattage compatibility

A HP Smart Pin (4.5mm barrel) charger at 45W safely powers any HP Smart Pin (4.5mm barrel) laptop rated 45W or below. A charger rated HIGHER than the original wattage is safe, provided connector type, polarity and (for barrel) tip size and voltage all match. The laptop draws only the current it needs.

Example: a 90W HP Smart adapter safely powers a 65W HP laptop. A 65W USB-C PD charger safely powers a 45W USB-C laptop.

Connector

Uses the HP Smart Pin (4.5mm barrel) — how to identify it→

Compatible laptop families

Ships as standard with the HP Pavilion 15-eg (Intel, 2021), HP Pavilion 15-eh (AMD, 2021), HP Pavilion 14-dv.

What to search for

When buying a replacement, search for “HP 45W 4.5mm blue tip charger 741727-001” and confirm the wattage and connector match the specs above.

Frequently asked questions

Can I use a higher-wattage HP Smart Pin (4.5mm barrel) charger instead of the HP 45W Smart Pin 4.5mm Adapter?＋

Yes. A charger with the same connector (HP Smart Pin (4.5mm barrel)) at an equal or higher wattage is safe — your laptop only draws the power it needs. A lower-wattage charger may charge slowly or not at all.

Which laptops use the HP 45W Smart Pin 4.5mm Adapter?＋

It powers HP Smart Pin (4.5mm barrel) laptops rated 45W or below, including HP Pavilion.

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