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Brother LB3690 auto adapter small black plastic unit

Brother

Brother LB3690 Auto Adapter scanner supply

SKU CH-TKZ7-DKT8H MPN LB3690

Auto adapter powers compatible Brother inkjet printers from a 12 V DC source

  • Product categoryAuto Adapter
  • Compatible withInkjet Printer
  • DetailsDevice Support: Printer Input Voltage: 12 V DC
  • Product weight0.1 lb (0.05 kg)
  • Powers inkjet printers reliably
  • 12 V DC input matches printer requirements
  • Lightweight at 0.1 lb for easy handling
  • Designed specifically for Brother inkjet compatibility
  • Auto Adapter model 3690 ensures correct fit

Power supply for Brother inkjet printers

The Brother LB3690 Auto Adapter provides a 12 V DC power connection for compatible inkjet printers. It is a dedicated supply accessory designed to keep supported devices running when a standard AC outlet is not available. The unit weighs 0.1 lb and installs without tools. It is sold new and ready for immediate use.

Mobile workers and field service teams

This adapter suits users who operate Brother inkjet printers in vehicles, on job sites or in other locations where only a 12 V DC source is present. It is not intended for printers that require a different input voltage or for desktop environments with reliable mains power. Buyers needing an AC power cord or a multi-voltage supply should look at other options.

12 V DC input voltage requirement

The single specification that determines fit is the 12 V DC input rating; the printer must accept this exact voltage to operate safely with the adapter. Confirm the device's power label matches before purchasing. No other voltage or connector type is supported by this model.

How it compares

Measured against everything we stock in Print & Scan Accessories, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 91% of the 5,855 comparable items (median $91.99).

Specifications

Product
Brand nameBrother
Model nameLB3690
Product categoryAuto Adapter
Size & build
Product weight0.1 lb (0.05 kg)
Shipping weight1.47 kg
Package size305 × 203 × 152 mm
Compatibility
Compatible withInkjet Printer

Questions about this item

How do I confirm the LB3690 auto adapter is powering my printer correctly after connecting it?

Connect the adapter to the printer and a 12 V DC source; the printer should power on and show its normal ready state without error lights.

What comes with the Brother LB3690 auto adapter and what must I supply separately?

The package contains the LB3690 auto adapter only; you must provide a compatible 12 V DC power source and the inkjet printer it supports.

Which version of the LB3690 auto adapter should I choose for my inkjet printer?

There is a single LB3690 model rated at 12 V DC for inkjet printers; select this one if your device matches that specification.

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