🔋💻 HP 19V 45W Laptop Charger
 
(19V 2.37A AC Adapter • 45W • 4.0 mm × 1.7 mm Barrel Connector • No Center Pin)

This compact AC adapter delivers 45W of regulated DC power to HP laptops using the 4.0 mm × 1.7 mm barrel connector. It was HP’s standard for netbooks and early ultraportables in the late 2000s and early 2010s.
 
🔧 Charger Form
Input: 100–240V AC, 50/60Hz
Output: 19V DC, 2.37A (45W)
Connector: 4.0 mm outer / 1.7 mm inner barrel, no center pin
Inline power brick with detachable AC cord
Common part numbers: 463552‑002, 463955‑001, PPP009L‑E, PA‑1450‑32HH, ED494AA
 
🖥️ Compatible Devices
🟨 HP Mini / Netbook Series
Mini 110, 210, 2140
Mini 311, 5101, 5102
Compaq Mini CQ10, CQ20
🟨 HP Pavilion dm / Sleekbook Series
Pavilion dm1, dm1z (AMD Fusion configs)
Pavilion dm3 (early low‑power configs)
Pavilion Sleekbook 14, 15 (select low‑power configs)
🟨 HP Compaq Presario Series
Presario CQ10, CQ20
Presario CQ32, CQ42 (low‑power configs)
🟨 HP Chromebook (early barrel input)
Chromebook 11‑2000 series (barrel input variants)
Chromebook 14‑q000 series (pre‑USB‑C configs)
 
✅ Common Uses
🔌 Powering HP Minis and Presarios with 10–12″ displays
🧩 Replacing lost or damaged OEM 45W yellow‑tip adapters
🎒 Travel adapter for netbooks and early Chromebooks
🧪 Testing legacy HP systems with a known‑good 45W supply
 
🧠 Signal Format
⚡ Input: Universal AC (100–240V)
🔋 Output: Regulated 19V DC, 45W max
🔌 No center pin — simple barrel contact only
🔁 Not compatible with HP’s 4.5 mm blue‑tip or 7.4 mm smart‑pin adapters
 
⚠️ Things to Watch Out For
📉 Underpowered for Pavilion/ProBook/EliteBook systems requiring 65W+
🔌 Connector must match — not interchangeable with blue‑tip or smart‑pin barrels
🧯 Avoid third‑party clones with weak contact — may cause intermittent charging
🌀 Excess heat or frayed cables can cause power dropouts
🧪 Always confirm laptop’s required wattage before swapping adapters
 
🛠️ Quick Tips for Beginners
🧭 Check underside of laptop or original charger for voltage and connector size
🔌 Use only with laptops rated for 45W and 4.0 mm × 1.7 mm input
🧪 If laptop won’t charge, inspect barrel contact and cable integrity
🧯 Label adapters clearly to avoid mix‑ups with blue‑tip or smart‑pin chargers
🧵 Keep one in your travel kit for legacy Minis and Presarios