FOCUSTEC 65W 19V 3.42A AC adapter for Asus Vivobook Zenbook round connector

Replacement power supply for Vivobook and Zenbook

This FOCUSTEC AC adapter replaces a lost or damaged charger for Asus Vivobook and Zenbook laptops that use a round power connector. It delivers up to 65 W at 19 V and 3.42 A and also covers 45 W and 33 W models. The unit is UL certified and accepts 100 to 240 V input for worldwide use. Four detachable round tips are included to match the laptop's port.

Upgrading from a lower-wattage or faulty charger

The adapter replaces any original 33 W, 45 W or 65 W round-connector supply that no longer holds a charge or has a frayed cable. The higher 65 W rating means it can power the laptop and charge the battery simultaneously under load. The jump is worth it when the original unit cannot sustain full performance or when a single spare must cover several Vivobook or Zenbook models.

Build integration and travel convenience

The brick connects to a standard IEC C7 figure-8 mains lead, so only a local cable is needed when travelling. Four swappable round tips eliminate the need to carry multiple adapters for different Asus ultraportables. UL certification satisfies corporate and education procurement safety requirements. Buyers whose laptops use USB-C or barrel connectors other than the supplied round tips cannot use this unit.