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Rectangular black power brick with US two-prong plug and round 7.9 by 5.5 mm centre-pin connector

Lenovo

Lenovo 90 W 20 V 4.5 A AC adapter 7.9 × 5.5 mm pin US cord

SKU CH-NY6D-CAVGK

Genuine OEM 90 W 20 V 4.5 A AC adapter with 7.9 × 5.5 mm centre-pin connector and US 2-prong cord for compatible Lenovo and ThinkPad laptops

  • Genuine Lenovo OEM adapter ensures reliable charging
  • 90 W output at 20 V 4.5 A powers compatible ThinkPad models
  • 100-240 V 50-60 Hz input works worldwide with US cord
  • 9 mm × 5.5 mm connector with central pin fits listed laptops
  • Replaces multiple IBM FRU part numbers for direct compatibility

Genuine Lenovo 90 W AC adapter

This genuine Lenovo AC adapter delivers 90 W at 20 V and 4.5 A for compatible ThinkPad laptops. It accepts 100–240 V input at 50–60 Hz and terminates in a 7.9 mm × 5.5 mm barrel connector with a centre pin. A US two-prong mains cord is included.

Suited for ThinkPad T, X, R and Z series owners

Buyers replacing a lost or damaged 90 W adapter for the listed ThinkPad models will find a direct fit. Those whose laptop requires a different wattage, voltage or connector dimensions should look elsewhere.

7.9 mm × 5.5 mm centre-pin connector decides fit

The barrel plug measures 7.9 mm outer diameter by 5.5 mm inner diameter and carries a central pin. Match this exact geometry to the laptop’s power jack before purchasing.

How it compares

Measured against everything we stock in Jumper & Adapter Power Cords, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 80% of the 402 comparable items (median $13.99).

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Specifications

Product
Brand nameLenovo

Questions about this item

Does the adapter come with the US power cord attached or do I need to buy a separate cord?

The unit includes the US 2-prong cord permanently attached to the brick so nothing extra is required.

My ThinkPad T420 uses a 7.9 × 5.5 mm centre-pin tip — will this 90 W 20 V 4.5 A model fit and supply the correct power?

Yes, the 7.9 mm outer by 5.5 mm inner connector with centre pin matches the T420 and the 20 V 4.5 A 90 W output meets its factory spec.

What does the 90 W rating actually deliver when the adapter is plugged into a ThinkPad T510 under load?

It provides a steady 20 V at up to 4.5 A, giving the full 90 W the T510 expects for charging and operation simultaneously.

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