🔋💻 ASUS 19V 33W Laptop Charger
 
(19V 1.75A AC Adapter • 33W • 6.4 mm × 2.15 mm Rectangular Connector)

This compact AC adapter delivers 33W of regulated DC power to ASUS laptops using the rectangular 6.4 mm × 2.15 mm connector. It was the standard supply for ASUS’s smallest ultrabooks, netbook successors, and early Chromebooks.
 
🔧 Charger Form
Input: 100–240V AC, 50/60Hz
Output: 19V DC, 1.75A (33W)
Connector: 6.4 mm outer / 2.15 mm inner rectangular barrel, no center pin
Lightweight, travel‑friendly brick design
Often labeled as ADP‑33AW, ADP‑33BW, or equivalent
 
🖥️ Compatible Devices
📘 VivoBook / X‑Series
X200CA, X200MA, X201E, X202E
X403, X403M, X403SA
X540S, X540SA (33W configs)
R417, R420, R540 (low‑power configs)
🔄 Q‑Series / S‑Series Convertibles
Q200E, S200E (touchscreen ultraportables)
Q302, Q303 (entry‑level 2‑in‑1s)
🌟 ZenBook (lightweight models)
UX21A, UX31A (early ultrabooks)
UX305 (33W configs)
💻 EeeBook / Transformer Book
EeeBook X205TA, E202SA
Transformer Book T100, T200 (barrel input versions)
🖥️ Chromebooks
Chromebook C200, C201, C202, C300, C301 (33W configs)
 
✅ Common Uses
🔌 Powering ASUS ultrabooks, convertibles, and Chromebooks
🧩 Replacing lost or damaged OEM chargers
🏢 Standardizing spares for school or office fleets
🎒 Keeping as a lightweight travel adapter
🧪 Testing ASUS laptops with a known‑good 33W supply
 
🧠 Signal Format
⚡ Input: Universal AC (100–240V)
🔋 Output: Regulated 19V DC, 33W max
🔌 No center pin — relies on barrel contact only
🔁 Backward compatible with some 30W laptops (safe, charges faster)
 
⚠️ Things to Watch Out For
📉 Not suitable for ASUS ROG, TUF, or higher‑end VivoBooks/ZenBooks (require 45W–230W)
🔌 Connector must match — not interchangeable with ASUS’s 4.0 mm × 1.35 mm or 5.5 mm × 2.5 mm barrels, or USB‑C
🧯 Avoid third‑party clones with poor contact — may cause intermittent charging
🌀 Excess heat or frayed cables can cause power dropouts
🧪 Always confirm connector type and 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 33W and 6.4 mm × 2.15 mm input
🧪 If laptop reports “adapter not recognized,” inspect barrel contact and cable integrity
🧯 Label adapters clearly to avoid mix‑ups with other ASUS chargers
🧵 Keep one at desk and one in travel bag for convenience