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Compact white document scanner with paper feed slot and control buttons

Brother

Brother DS-940DW Duplex Wireless Document Scanner

SKU CH-JEWS-SQB0J MPN DS-940DW

A compact duplex document scanner captures colour and mono pages at up to 16 ppm with 600 x 600 dpi optical resolution and wireless or USB power

  • Power drawApprox 3.6 W (USB3.0) / 4.4 W Wi-Fi (Scanning) Approx. 2.2 W
  • Sensor typeDual CIS
  • Scan speedUp to 16 ppm (Color and Mono)
  • Optical scan resolution600 × 600 dpi
  • Interpolated resolution1200 × 1200 dpi
  • Largest document size8.5 in × 72 in
  • Scans two-sided pages in one pass at 16 ppm
  • Wireless 802.11 b/g/n sends scans straight to network devices
  • Optical 600 x 600 dpi captures fine detail on every page
  • USB bus-power or built-in lithium battery for true portability
  • Handles documents up to 8.5 x 72 inches for long receipts

Portable duplex scanner for mobile professionals

The Brother DS-940DW is a compact document scanner that captures single and double-sided pages in one pass at up to 16 ppm. Its dual CIS sensor delivers 600 x 600 dpi optical resolution and handles media up to 8.5 x 72 inches. Wireless 802.11 b/g/n lets you send scans directly to network devices or cloud services without a host PC.

Check power and OS compatibility before ordering

The unit runs from USB bus power or its internal lithium battery, drawing approximately 3.6 W over USB 3.0 and 4.4 W while scanning over Wi-Fi. Verify that your device provides a Micro USB 3.0 port or plan to use the battery for untethered operation. Supported systems include Windows 7, 8.1, 10 and Server 2012 through 2019, macOS 10.12 to 10.14, and Linux.

Fits a mobile workflow with minimal desk space

At 12.56 x 2.48 x 1.79 inches and 1.54 lbs, the scanner slides into a laptop bag and leaves room for other gear. It scans to file, image, OCR, email, cloud services or a Micro SD card, freeing you from a dedicated workstation. Included software such as Kofax Power PDF Standard and Brother iPrint & Scan handles capture and routing on both Windows and Mac.

How it compares

Measured against everything we stock in Sheet-Fed Document Scanners, at today’s prices. Recalculated every night.

Price $172.99
Cheaper than about 87% of the 253 comparable items (median $355.99).

Specifications

Product
Brand nameBrother
Product lineDsmobile
Model nameDS-940DW
Product typeDuplex
Performance
Scan speedUp to 16 ppm (Color and Mono)
Optical scan resolution600 × 600 dpi
Display
Interpolated resolution1200 × 1200 dpi
Ports & slots
USB connectionsMicro USB 3.0
Extra portsWireless 802.11 b/g/n
Power
Power drawApprox 3.6 W (USB3.0) / 4.4 W Wi-Fi (Scanning)
Approx. 2.2 W @WIFI mode / 1.5 W @PC mode (Ready Mode)
Power sourceUSB bus-power, Lithium battery
Size & build
Product dimensions12.56 in × 2.48 in × 1.79 in
Product weight1.54 lb (0.7 kg)
Shipping weight1.07 kg
Package size375 × 165 × 76 mm
Compatibility
Supported operating systemsWindows: 7 / 8.1 / 10, Server 2012 / 2012 R2 / 2016 / 2019
Mac: macOS v10.12.x / 10.13.x / 10.14.x
Linux
Software
Pre-installed softwareOCR, BR-Receipts, Brother iPrint & Scan, Kofax Power PDF Standard v3
Windows: PRESTO! BizCard 6, Nuance PaperPort 14 SE, iPS
Mac: iPS PRESTO! BizCard 7
More details
Sensor typeDual CIS
Largest document size8.5 in × 72 in
Media formatFile, Image, OCR, Email, Cloud Services, Micro SD Card

Questions about this item

What comes in the box with the DS-940DW and do I need to buy a cable or battery separately?

The package includes the scanner, a Micro USB 3.0 cable, a lithium-ion rechargeable battery, a calibration sheet, a quick setup guide and the software disc — no extra cable or battery is required.

Should I choose the USB-powered or battery-powered version of the DS-940DW for mobile use?

This single model supports both USB bus power and the included lithium-ion battery, so you can scan while plugged in or completely untethered without selecting a different SKU.

What does the 16 ppm duplex speed mean when I scan a two-sided 20-page contract over Wi-Fi?

In duplex mode the scanner captures both sides in one pass at up to 16 pages per minute, so a 20-page double-sided document finishes in roughly one minute over the 802.11 b/g/n link.

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