Product comparison · 2 scanners

Brother DS-940DWE scanner Sheet-fed scanner vs Epson V39 II

29specifications compared
18differ
11identical
36known for one product only

Key differences

The Brother DS-940DWE scanner Sheet-fed scanner has 0.097 W more power consumption (off) than the Epson V39 II (0.11 W vs 0.013 W). The Brother DS-940DWE scanner Sheet-fed scanner has 70 mm more width than the Epson V39 II (319 mm vs 249 mm). The Epson V39 II has 318.6 mm more depth than the Brother DS-940DWE scanner Sheet-fed scanner (364 mm vs 45.4 mm). Only the Brother DS-940DWE scanner Sheet-fed scanner has duplex scanning. Only the Brother DS-940DWE scanner Sheet-fed scanner has built-in display.

Optical scanning resolution
- DS-940DWE scanner Sheet-fed scanner:600 x 600 DPI
- V39 II:4800 x 4800 DPI
Duplex scanning
- DS-940DWE scanner Sheet-fed scanner:Yes
- V39 II:No
Scanner type
- DS-940DWE scanner Sheet-fed scanner:Sheet-fed scanner
- V39 II:Flatbed scanner
Built-in display
- DS-940DWE scanner Sheet-fed scanner:Yes
- V39 II:No
Product colour
- DS-940DWE scanner Sheet-fed scanner:White
- V39 II:Black
Sensor type
- DS-940DWE scanner Sheet-fed scanner:Dual CIS
- V39 II:CIS
Scan drivers
- DS-940DWE scanner Sheet-fed scanner:TWAIN, WIA
- V39 II:ICA, TWAIN
USB version
- DS-940DWE scanner Sheet-fed scanner:3.2 Gen 1 (3.1 Gen 1)
- V39 II:2.0

Side by side

Differences highlightedShow differences only

Comparison of DS-940DWE, V39 II
65 specifications	A Brother DS-940DWE scanner Sheet-fed scanner Model DS-940DWE View product	B Epson V39 II View product
Scanning2 differ
Optical scanning resolutionDiffers	600 x 600 DPI	4800 x 4800 DPI
Duplex scanningDiffers	Yes	No
Greyscale levelsKnown for one	256	Unknown — not stated by the source
Scan speedKnown for one	4 sec/page	Unknown — not stated by the source
Maximum scan sizeKnown for one	Unknown — not stated by the source	216 x 297 mm
Input greyscale depthKnown for one	Unknown — not stated by the source	16 bit
Design3 differ
Scanner typeDiffers	Sheet-fed scanner	Flatbed scanner
Built-in displayDiffers	Yes	No
Product colourDiffers	White	Black
DisplayKnown for one	LED	Unknown — not stated by the source
Performance2 differ
Sensor typeDiffers	Dual CIS	CIS
Daily duty cycle (max)Known for one	100 pages	Unknown — not stated by the source
Maximum duty cycleKnown for one	2000 pages per month	Unknown — not stated by the source
Scan toKnown for one	PC, Memory card, E-mail	Unknown — not stated by the source
Scan driversDiffers	TWAIN, WIA	ICA, TWAIN
Sound pressure level (max)Known for one	53 dB	Unknown — not stated by the source
Compatible memory cardsKnown for one	SD, MicroSD (TransFlash)	Unknown — not stated by the source
Light sourceKnown for one	Unknown — not stated by the source	RGB LED
Scan file formatsKnown for one	Unknown — not stated by the source	BMP, JPEG, PDF, TIFF
Button functionsKnown for one	Unknown — not stated by the source	Copy, On, Scan to PDF
Paper handlingidentical
Scanning media types supportedKnown for one	Plastic Card, Plain paper, Business Card, Photo paper	Unknown — not stated by the source
Card thickness (max)Known for one	1.24 mm	Unknown — not stated by the source
ISO A-series sizes (A0...A9)Known for one	Unknown — not stated by the source	A4
LegalKnown for one	Unknown — not stated by the source	Yes
LetterKnown for one	Unknown — not stated by the source	Yes
Ports & interfaces1 differ
USB versionDiffers	3.2 Gen 1 (3.1 Gen 1)	2.0
USB connector typeKnown for one	USB Type-C	Unknown — not stated by the source
Networkidentical
Wi-FiKnown for one	Yes	Unknown — not stated by the source
Wi-Fi standardsKnown for one	802.11b, 802.11g, Wi-Fi 4 (802.11n)	Unknown — not stated by the source
Security algorithmsKnown for one	SSL/TLS, 64-bit WEP, 128-bit WEP, WPA-PSK, WPA2-PSK, TKIP, AES	Unknown — not stated by the source
Wi-Fi DirectKnown for one	Yes	Unknown — not stated by the source
Power2 differ
Power supply typeDiffers	USB/Battery	USB
Power consumption (standby)Known for one	2.3 W	Unknown — not stated by the source
Power consumption (off)Differs	0.11 W	0.013 W
Battery typeKnown for one	Built-in battery	Unknown — not stated by the source
Power consumption (typical)Known for one	Unknown — not stated by the source	2.5 W
Weight & dimensions4 differ
WidthDiffers	319 mm	249 mm
DepthDiffers	45.4 mm	364 mm
HeightDiffers	63.1 mm	39 mm
WeightDiffers	699 g	1.5 kg
Packaging dataidentical
Package widthKnown for one	377 mm	Unknown — not stated by the source
Package depthKnown for one	162 mm	Unknown — not stated by the source
Package heightKnown for one	76 mm	Unknown — not stated by the source
Package weightKnown for one	1.07 kg	Unknown — not stated by the source
Packaging contentidentical
Batteries includedKnown for one	No	Unknown — not stated by the source
Bundled softwareKnown for one	Windows Software(Brother iPrint&Scan, Kofax Power PDF Standard v5, Remote Setup), Macintosh Software(Brother iPrint&Scan Desktop, Remote Setup)	Unknown — not stated by the source
Packaging contentKnown for one	USB cable, Quick setup guide, Product safety guide, Warranty, Device	Unknown — not stated by the source
Batteryidentical
Battery technologyKnown for one	Lithium	Unknown — not stated by the source
System requirements2 differ
Mac operating systems supportedDiffers	Mac OS 26 Tahoe, Mac OS X 15.0 Sequoia, Mac OS X 14.0 Sonoma	Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.7.5 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Mobile operating systems supportedKnown for one	Android, iOS, iPadOS	Unknown — not stated by the source
Server operating systems supportedKnown for one	Windows Server 2016, Windows Server 2019, Windows Server 2022, Windows Server 2025	Unknown — not stated by the source
Windows operating systems supportedDiffers	Windows 10, Windows 11	Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Vista, Windows XP
Operational conditions2 differ
Operating temperature (T-T)Differs	5 - 35 °C	10 - 35 °C
Storage relative humidity (H-H)Differs	10 - 90%	20 - 80%

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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