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Black rectangular laptop power adapter with 5.5 by 2.5 mm barrel connector

OIAGLH

OIAGLH PA-1900-56LC 20V 4.5A 90W 5.5x2.5mm ADP-90DD B AC Adapter

SKU CH-AS2S-5G8VE

90 W laptop charger with 5.5 × 2.5 mm tip for select Lenovo models

  • Delivers 90 W of power for reliable laptop charging
  • 20 V 4.5 A output matches original adapter specifications
  • 5 mm by 2.5 mm barrel connector fits listed models
  • Compatible with Y410 Y430 U350 B450 C460 laptops

Compatible Laptop Models

This AC adapter is built for the Y410, Y430, U350, B450 and C460 laptops. It supplies 20 V at 4.5 A for a total of 90 W through a 5.5 mm by 2.5 mm barrel connector. The unit is new and ready for immediate use as a direct replacement charger.

Thermals Noise and Power Draw

The adapter delivers a steady 90 W output with standard efficiency for its class. In normal operation it runs warm but stays within expected thermal limits for a 20 V 4.5 A brick. No fan is present so acoustic output is essentially silent. Power draw at the wall matches the rated load plus typical conversion losses.

Highlights

  • Delivers 90 W of power for reliable laptop charging
  • 20 V 4.5 A output matches original adapter specifications
  • 5 mm by 2.5 mm barrel connector fits listed models
  • Compatible with Y410 Y430 U350 B450 C460 laptops

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the PA-1900-56LC adapter with its 5.5 x 2.5 mm connector, and what step do people often miss?

Align the 5.5 mm outer and 2.5 mm inner diameter plug with the laptop's DC jack, push straight in until it seats firmly, and verify the 20 V 4.5 A rating matches the device label before powering on.

What maintenance or replacement will the 90 W ADP-90DD B unit need over time?

Inspect the cable for wear near the 5.5 x 2.5 mm plug and the brick strain relief; replace the adapter if the output drops below 20 V 4.5 A or the connector becomes loose.

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