The standard HP blue pin (blue tip) laptop charger typically provides a 19.5V DC output, with common power ratings of 45W, 65W, or 90W depending on your laptop's power requirements.
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Specifications
Connector Tip Size
4.5mm × 3.0mm barrel connector with a blue exterior and a central pinInput Voltage: 100–240V AC, 50–60Hz (auto-switching for international use)Output Voltage: 19.5V DCOutput Current & Wattage Options:45W Variant: 19.5V ⎓ 2.31A65W Variant: 19.5V ⎓ 3.33A (Most common)90W Variant: 19.5V ⎓ 4.62A (For higher-performance models)