DescriptionHere’s a clear explanation of the HP 19V 3.34 A Blue Pin Laptop Charger — a common 65 W charger used on many HP notebooks that have the blue “smart pin” barrel connector:�� What It IsA 19.5 V ⎓ 3.33 A (65 W) HP Blue Pin Laptop Charger is a replacement AC adapter that fits HP laptops with the Blue Pin (also called Smart Pin) connector — a small round barrel plug with a blue inside and a center pin. It’s widely used on many HP Pavilion, ProBook, Envy, and Stream notebooks.�� Key SpecificationsOutput Voltage: 19.5 V DCOutput Current: 3.33 APower: ~65 WConnector: Blue pin barrel tip (typically ~4.5 mm × 3.0 mm with center pin)Input: 100–240 V ~ 50/60 Hz (works worldwide)Works with laptops that require a blue pin smart charger.�� What the “Blue Pin” MeansHP uses a special “smart pin” connector with a blue inner tip and center pin for certain charger models. These smart pin chargers communicate with the laptop to regulate power safely, and they’re not USB-C — the cable plugs straight into the laptop’s barrel port.�� Where It’s UsedThis charger is commonly compatible with many HP laptops that originally shipped with a 65 W blue pin adapter, including various models of:✔ HP Pavilion (many 14″ and 15″ series)✔ HP ProBook (430, 440, 450 etc.)✔ HP Envy (select models)✔ HP Stream and basic notebooks✔ Possibly some EliteBook and other HP models that use the blue tip connector
