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Black rectangular Lenovo 135W external power adapter with slim tip connector

Lenovo

Lenovo 4X21L38720 135W power adapter

SKU CH-CMN2-2VHWC MPN 4X21L38720

135 W external AC adapter with slim-tip connector for Lenovo Tiny desktops, 100–240 V input, 126 × 77 × 22 mm

  • Delivers 135 W for fast Tiny charging
  • Accepts 100-240 V input for worldwide use
  • Slim-tip connector fits Lenovo Tiny models
  • Compact 126 × 77 × 22 mm enclosure
  • Backed by one-year service and support

Lenovo ThinkCentre 135W AC Adapter Gen 2

This external power adapter supplies 135 W to compatible Lenovo Tiny desktops via a slim-tip connector. It accepts 100–240 V AC at 50–60 Hz and draws up to 2.5 A. The unit is finished in black and ships new for United States outlets.

Thermals noise and power draw

The adapter operates as a standard external brick with no integrated fan, so it runs silently. It converts mains input to the rated 135 W output with typical AC-adapter efficiency. Normal warmth is expected during sustained load.

Slim-tip connector compatibility

The 3-pin slim-tip plug fits only Lenovo Tiny models designed for this connector. Systems requiring a different tip or a higher wattage brick cannot use this adapter. Verify the exact connector type before purchase.

How it compares

Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.

Price $110.99
Pricier than about 90% of the 3,875 comparable items (median $23.99).

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Specifications

Size & build
Shipping weight0.91 kg
Package size267 × 127 × 64 mm

Questions about this item

How do I connect the 3Pin slim tip to my ThinkCentre Tiny, and which orientation avoids a loose fit?

Align the slim tip with the DC jack on the Tiny and push straight in until it clicks; the keyed 3Pin design only seats one way, so forcing it sideways bends the pins.

When should I plan to replace the external 135W adapter after daily use?

The unit carries a 1 year service period; after that, watch for cracked cables, overheating or intermittent charging as signs it needs swapping.

At what point does the 100-240V input with 2.5A draw hit its thermal limit during continuous load?

Sustained 135W output at 50-60Hz will trigger internal protection once the enclosure reaches its rated temperature ceiling, causing output to throttle or shut off.

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