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Black rectangular 170W AC adapter with attached power cord

WAWEIS

WAWEIS 170W AC/DC Adapter for Lenovo ThinkPad W520 Type 4276

SKU CH-WFAK-BN2B2

170W replacement charger with 10 ft cord and FCC, CE, RoHS certifications for ThinkPad W520 4276 series

  • 170 W output powers demanding ThinkPad W520 workloads
  • 100–240 V 50/60 Hz input works worldwide
  • 10 ft total cord length reaches distant outlets
  • FCC, CE and RoHS certified for safety compliance
  • Over-current, over-voltage and short-circuit protection built in

170W AC/DC Adapter for ThinkPad W520

This 170W AC/DC adapter replaces the original power supply for the Lenovo ThinkPad W520 Type 4276 series, including part numbers 4276-3LU, 4276-3KU, 4276-3JU, 4276-3NU, 4276-3M, 427623U, 4276001 and 4276004. It is intended for owners of those specific models who need a new mains charger.

Ten-foot cord and full safety suite

The unit ships with a 10 ft power cord, giving generous reach between the wall socket and the laptop. Built-in protection covers over-current, over-voltage, short-circuit and total-power events, while the smart chip adds overheating guard. Certifications include FCC, CE and RoHS, confirming compliance with recognised safety and environmental standards.

Direct replacement for a failed or lost original

This adapter matches the 170W output and connector of the factory unit, so it restores charging and operation without modification. The jump is worth it when the original brick is damaged, lost or no longer holds a stable connection. It is not suited for laptops that require a different wattage or tip size.

Highlights

  • 170 W output powers demanding ThinkPad W520 workloads
  • 100–240 V 50/60 Hz input works worldwide
  • 10 ft total cord length reaches distant outlets
  • FCC, CE and RoHS certified for safety compliance
  • Over-current, over-voltage and short-circuit protection built in

Specifications

No published specifications for this item yet.

Questions about this item

What input voltage range does the 170W adapter accept?

The adapter accepts a world-wide input range of 100-240VAC at 50/60Hz, so it works on mains supplies in most countries without a voltage converter.

What connector and cable length does the 170W adapter use to reach the ThinkPad W520?

It includes a 10 ft total power cord with a rectangular 20 V tip that matches the ThinkPad W520 Type 4276 charging port.

How do you install the adapter, and what step is often missed?

Plug the AC cord into the brick, connect the DC tip firmly into the laptop until it clicks, then switch on the wall socket; the common mistake is leaving the tip partially seated, which prevents charging.

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