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Black rectangular AC adapter with barrel connector and mains plug

myVolts

myVolts AC Adapter 19V 3.42A 65W for Dynabook Tecra A40-G-BTO A40-E BTO A30-E-BTO

SKU CH-KX2Z-X8ASN

Replacement 19V 3.42A 65W AC adapter for Dynabook Tecra A40 and A30 models with worldwide 100-240V input and built-in safeguard protections

  • Delivers 65 W output for reliable laptop power
  • 19 V 3.42 A matches original adapter specifications
  • Worldwide 100-240 VAC input works across regions
  • Built-in over-voltage, short-circuit and over-current protection
  • CE, FCC and RoHS certified for safety compliance

Compatible AC Adapter for Dynabook Tecra

This 65 W adapter powers Dynabook Tecra A40-G-BTO, A40-E BTO and A30-E-BTO laptops. It delivers a steady 19 V at 3.42 A and accepts worldwide input from 100 to 240 VAC at 50 to 60 Hz. Built-in safeguards protect against incorrect voltage, short circuit and internal overheating. The unit is CE, FCC and RoHS certified and ships as a brand-new replacement, not an original Dynabook product.

Sustained-load behaviour

Smart Chip Technology regulates output continuously so the charger maintains its rated 65 W during extended use without overheating. Over-voltage, over-current and short-circuit protections engage automatically if limits are exceeded. The adapter is also compatible with 45 W requirements, allowing it to run cooler when the connected system draws less power. These features keep performance stable over long work sessions.

Deciding specification: 19 V 3.42 A 65 W output

The single figure that determines fit is the 19 V, 3.42 A, 65 W output rating. If your Tecra model requires exactly this voltage and current, the adapter will operate correctly; if the laptop needs a different voltage or higher wattage, this unit will not meet the requirement. No other specification in the listing overrides this electrical match.

Highlights

  • Delivers 65 W output for reliable laptop power
  • 19 V 3.42 A matches original adapter specifications
  • Worldwide 100-240 VAC input works across regions
  • Built-in over-voltage, short-circuit and over-current protection
  • CE, FCC and RoHS certified for safety compliance

Specifications

No published specifications for this item yet.

Questions about this item

How much heat does the 65 W adapter generate during continuous use?

The unit includes internal overheating protection and meets CE, FCC and RoHS safety standards for continuous operation.

What must I already own to use this charger with my Tecra laptop?

You need a compatible Dynabook Tecra A40-G-BTO, A40-E BTO or A30-E-BTO and a standard IEC C7 or C5 mains lead for the 100-240 V input.

Will the 19 V 3.42 A output work reliably with an older Tecra model that originally used a 45 W supply?

Yes, the adapter is rated 65 W and backwards compatible to 45 W, with smart-chip technology that matches the original specifications.

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