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Black rectangular AC adapter with attached cable and storage pouch

BFKK

BFKK 1749 90W 15V 6A AC adapter

SKU CH-08RC-KKM3C MPN 1749

Charges Microsoft Surface Pro 4 Docking Station model 1749 with 90W 15V 6A output and includes a 6.2Ft power cord and storage pouch

  • Product typeAC Adapter
  • Charges Microsoft Surface Pro 4 Docking Station model 1749
  • Delivers 90W at 15V 6A with 5V 1A USB port
  • Accepts 100-240V 1.2A input at 50/60Hz worldwide
  • Includes 6.2Ft power cord and storage pouch for travel
  • New 90W AC adapter listed by manufacturer 13 February 2025

What this product is

The BFKK 1749 is a 90W AC adapter that delivers 15V at 6A for the Microsoft Surface Pro 4 Docking Station model 1749. It accepts 100-240V input at 1.2A across 50/60Hz and includes a USB port rated at 5V 1A. A 6.2Ft power cord and a storage pouch are supplied in the box.

Who this suits

This adapter suits owners of a Surface Pro 4 Docking Station model 1749 who need a replacement or spare power supply. It is not for users whose docking station requires a different voltage, a higher wattage or a proprietary connector that does not match the 15V 6A specification.

Sustained-load behaviour

The unit is rated to provide a continuous 90W output at 15V 6A while operating from 100-240V mains. The 5V 1A USB port can run simultaneously without reducing the main output. No thermal limits, efficiency figures or duty-cycle data are provided by the manufacturer.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $56.99
Pricier than about 87% of the 27,790 comparable items (median $30.99).

Specifications

Product
Product typeAC Adapter

Questions about this item

Which docking station model must I already own for this 15V 6A adapter to work?

It is designed for the Microsoft Surface Pro 4 Docking Station with dock model 1749.

Will the 5V 1A USB port on this 90W unit charge a legacy phone while the dock is powered?

Yes, the USB port supplies 5V at 1A independently of the 15V dock output.

How can I confirm the 15V 6A output is active after connecting the 6.2Ft cord?

The dock's power indicator lights when the adapter delivers 15V 6A to model 1749.

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