🔋💻 Toshiba 19V 30W Laptop Charger
 
(19V 1.58A AC Adapter • 30W • 5.5 mm × 2.5 mm Barrel Connector • No Center Pin)

This ultra‑light AC adapter delivers 30W of regulated DC power to Toshiba’s Atom‑based netbooks and select ultraportables. It was Toshiba’s most compact charger, prioritizing portability over performance.
 
🔧 Charger Form
Input: 100–240V AC, 50/60Hz
Output: 19V DC, 1.58A (30W)
Connector: 5.5 mm outer / 2.5 mm inner barrel, no center pin
Inline power brick with detachable AC cord
Common part numbers: PA3743U‑1ACA, PA3743E‑1AC3, PA‑1300‑03, PA3467U‑1ACA
 
🖥️ Compatible Devices
🟦 Toshiba NB‑Series Netbooks
NB100
NB200, NB205
NB250, NB255
NB300, NB305
🟦 Toshiba Mini Satellite / Dynabook Netbooks
Satellite T110, T115 (low‑power configs)
Satellite Mini NB10t (regional variants)
Dynabook UX / UX10 (Japan market)
🟦 Other Confirmed Models
Toshiba AC100 “smartbook” (Tegra‑based configs)
Dynabook AZ (regional Android smartbook)
Select Portege ultraportables with ultra‑low‑voltage CPUs (special 30W configs)
 
✅ Common Uses
🔌 Powering Toshiba NB‑series netbooks and mini‑notebooks
🧩 Replacing lost or damaged OEM 30W adapters
🎒 Travel‑friendly charger for ultra‑portable systems
🧪 Testing Toshiba netbooks with a known‑good low‑wattage supply
 
🧠 Signal Format
⚡ Input: Universal AC (100–240V)
🔋 Output: Regulated 19V DC, 30W max
🔌 No center pin — relies on barrel contact only
🔁 Backward compatible with 19V 2.1A (40W) netbooks — but not suitable for 65W+ laptops
 
⚠️ Things to Watch Out For
📉 Not suitable for mainstream Satellite, Tecra, or Qosmio laptops (require 65W–90W+)
🔌 Connector matches Toshiba’s 65W/90W barrels, but wattage is much lower — avoid mix‑ups
🧯 Using on higher‑power laptops may cause throttling or failure to charge
🌀 Cable strain can cause intermittent charging — netbook adapters are more fragile
🧪 Always confirm laptop’s required wattage before swapping adapters
 
🛠️ Quick Tips for Beginners
🧭 Check underside of netbook or original charger for voltage and wattage
🔌 Use only with laptops rated for 30W–40W input
🧪 If laptop won’t power on, confirm it isn’t a higher‑wattage Satellite or Tecra
🧯 Label clearly to avoid confusion with Toshiba’s 65W/90W adapters
🧵 Keep as a lightweight travel spare for NB‑series systems