The ASUS 45W Adapter (19V, 2.37A) is the standard power supply for a wide range of ASUS ultrabooks, Chromebooks, and compact laptops . Rated at 45 watts, it provides sufficient power for dual-core processors, SSDs, and integrated graphics without the bulk of larger 65W or 90W adapters.
The critical distinction for this model is the 4.0mm x 1.35mm connector. ASUS has used multiple connector types over the years—this "thin pin" is significantly smaller than the older "big pin" (5.5mm x 2.5mm).
Visual difference:
Thin Pin (4.0mm): Narrow metal tip, used on modern ultrabooks
Big Pin (5.5mm): Wider tip, used on older budget models
⚠️ Important: Verify your laptop's charging port before purchasing. The 4.0mm thin pin will NOT fit a 5.5mm port .
