Asus 19V 2.1A 40W AC Power Adapter – Big Pin Charger (5.5mm × 2.5mm)

The Asus 19V 2.1A 40W Big Pin Power Adapter serves as a dependable replacement or secondary charger for legacy Asus consumer laptops, space-saving netbooks, and specific small-form-factor desktop PCs. Built with advanced internal circuitry, this power block stabilizes electricity inflow to insulate your hardware from sudden grid fluctuations, short circuits, and thermal overloads. Its travel-friendly, lightweight design allows for effortless storage and clean cable management, catering perfectly to remote workers and students moving around Nairobi.

Technical Specifications

• Power Output: 40 Watts

• Voltage: 19 V

• Current: 2.1 A

• Input Voltage: 100-240V ~ 50-60Hz (Worldwide standard)

• Connector Pin Size: 5.5mm Outside Diameter × 2.5mm Inside Diameter (Standard Large Round Barrel)

Compatibility Guide

This 40W power brick is engineered for devices matching the common 5.5mm × 2.5mm socket size. It is also safe to use as a replacement for 33W (19V 1.75A) devices utilizing the same connector dimensions.

Common compatible configurations and part numbers include:

• Asus Notebook & Netbook Series: Select classic entry-level Vivobook and X-series computers engineered with large round charging sockets.

• Asus EeeBox PC Series: EB1007, EB1007P, and other mini desktop variations running on 19V 40W specifications.

• Compatible Part Numbers: ADP-40PH AB, EXA0901XH, EXA081XA, ADP-40EH, ADP-40KD BB.

(Note: Asus laptops rely on several distinct charger varieties. Please look closely at your old block or current charging port to verify it requires the wider 5.5mm barrel rather than the modern, slim 4.0mm or 3.0mm micropins).