🔋💻 Samsung 19V 90W Laptop Charger
 
(19V 4.74A AC Adapter • 90W • 5.5 mm × 3.0 mm Barrel Connector • With Center Pin)

This smart AC adapter delivers 90W of regulated DC power to Samsung laptops using the 5.5 mm × 3.0 mm barrel connector with center pin. It was Samsung’s standard high‑power supply for performance laptops with discrete graphics and large displays.
 
🔧 Charger Form
Input: 100–240V AC, 50/60Hz
Output: 19V DC, 4.74A (90W)
Connector: 5.5 mm outer / 3.0 mm inner barrel with center pin
Inline power brick with detachable AC cord
Common part numbers: AD-9019S, AD-9019N, BA44-00322A, BA44-00295A, PA-1900-24, PA-1900-34
 
🖥️ Compatible Devices
🟦 Samsung NP-Series
NP300E4C, NP300E5C, NP300E5A
NP305E5A, NP365E5C, NP270E5E
NP510R5E, NP530U4B, NP530U3C
NP740U5M, NP740U5L
NP880Z5E, NP940Z5L
🟦 Samsung R-Series
R480, R503, R505, R507, R508
R509, R510, R513, R515, R517
R518, R518H, R519, R520, R522
R530, R540, R580, R730, R780
🟦 Samsung RV-Series
RV509, RV510, RV511
RV515, RV520, RV711, RV720
🟦 Samsung Series 2–9
Series 3, Series 5, Series 7
Series 7 Chronos (e.g. NP700Z5C)
Series 9 (barrel input variants only)
🟦 Samsung ATIV Book Series
ATIV Book 4, ATIV Book 5, ATIV Book 6
ATIV Book 7 (barrel input configs)
🟦 Samsung Q-Series / P-Series
Q330, Q430, Q530
P350E5C, P530
 
✅ Common Uses
🔌 Powering Samsung laptops with discrete GPUs and 15–17″ displays
🧩 Replacing lost or damaged OEM 90W adapters
🏢 Standardizing spares for Samsung fleet deployments
🎒 Keeping as a travel adapter for mid‑range systems
🧪 Testing Samsung laptops with a known‑good 90W supply
 
🧠 Signal Format
⚡ Input: Universal AC (100–240V)
🔋 Output: Regulated 19V DC, 90W max
🔌 Center pin provides ID signal for adapter recognition
🔁 Backward compatible with 60W Samsung laptops (safe, charges faster)
 
⚠️ Things to Watch Out For
📉 Not suitable for newer Samsung laptops using USB‑C or slim barrels
🔌 Connector must match — not interchangeable with pinless barrels or USB‑C
🧯 Avoid third‑party clones with weak center pins — may cause “adapter not recognized” errors
🌀 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 90W and 5.5 mm × 3.0 mm input
🧪 If laptop reports “adapter not recognized,” inspect center pin and barrel contact
🧯 Label adapters clearly to avoid mix‑ups with 60W or USB‑C chargers
🧵 Keep one at desk and one in travel bag for convenience