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Compact black rectangular AC adapter with integrated cable and a small multi-tip USB cable alongside

iTekiro

iTekiro 19V 40W AC Adapter for Samsung NP300/NP305/NP530/NP535/NP540 Ultrabooks + 10-in-1 USB Cable

SKU CH-3EXC-EWB4R

A 19 V, 40 W replacement AC adapter for Samsung NP300, NP305, NP530, NP535 and NP540 ultrabooks, supplied with a 10-in-1 USB charging cable

  • Worldwide AC 100-240V input for travel flexibility
  • 19V 2.1A 40W output powers compatible Samsung ultrabooks
  • Includes 10-in-1 USB cable for charging phones and accessories
  • Compact 3.74 x 1.69 x 1.10 inch form factor fits in bags
  • Lightweight 6.0 oz adapter adds minimal carry weight

iTekiro 19V 40W AC Adapter for Samsung Ultrabooks

This replacement charger powers compatible Samsung NP300, NP305, NP530, NP535 and NP540 ultrabooks while charging the battery whether the system is on or off. It accepts AC 100 to 240V at 50 to 60Hz for worldwide use and delivers 19VDC at 2.1A for a total of 40W. The package includes a 10-in-1 USB cable for charging phones, e-readers, GPS units and media players.

19VDC 2.1A 40W Output Matches Original Requirement

The critical specification is the 19VDC 2.1A output rated at 40W, which must match the ultrabook's original power requirement for correct operation. Input voltage spans 100 to 240V at 50 to 60Hz, allowing connection to mains supplies in different regions without a separate converter. Polarity and connector fit are designed for the listed Samsung models only.

Sustained 40W Delivery in a Compact Enclosure

Under continuous load the adapter maintains the rated 40W output within its 3.74 by 1.69 by 1.10 inch housing weighing 6.0 ounces without the two-prong cord. Thermal design handles steady-state operation rather than only short bursts, so the ultrabook can run and charge simultaneously for extended periods. The unit is a third-party replacement, not an original Samsung part.

How it compares

Measured against everything we stock in DC-to-AC Power Inverters, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 80% of the 866 comparable items (median $25.99).

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Specifications

Product
Brand nameiTekiro
Model nameSAM.TAC040WSMSM.V1

Questions about this item

How much power does the 19V 2.1A output actually deliver to the ultrabook?

The adapter provides a steady 40W at 19VDC and 2.1A, which is the rated output for charging the listed Samsung ultrabooks whether they are on or off.

What does the 100-240V 50-60Hz input mean for everyday use?

It accepts mains voltage worldwide without a separate converter, so the same unit works on 100V, 240V or anything in between at either 50Hz or 60Hz.

Will the 3.74 x 1.69 x 1.10 inch brick fit in a slim laptop bag?

At 3.74" long, 1.69" wide and 1.10" thick it occupies very little space, and the 6.0 oz weight adds minimal bulk to a typical sleeve or backpack.

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