In-Depth Review · Document Scanners
Brother · DSmobile

DS-740D

The Brother DS-740D is the duplex specialist among portables — a slim, under-1.5-pound scanner that captures both sides of a page in a single pass, something neither the ScanSnap iX100 nor the Epson ES-60W can do. It draws all its power over a single USB cable, so there’s no battery to charge and no power brick to carry. That same cable is also its main limitation: it’s USB-tethered, with no battery and no Wi-Fi, so it has to be plugged into a computer to work. As an inexpensive, genuinely pocketable duplex scanner for a laptop bag, though, it fills a real niche.

6.6 /10
Ranked #3 · Portable Scanners Duplex Mobile
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Brother DS-740D — pocketable USB-powered scanner with single-pass duplex
TypePortable / mobile (single-sheet)
Scan Speed16 ppm
FeederNone — manual single-sheet
DuplexSingle-pass (both sides at once)
Optical Resolution600 dpi (1200 interpolated)
PowerUSB-powered (micro USB 3.0) — no battery
ConnectivityUSB only (no Wi-Fi)
Color Depth48-bit internal
SoftwareBrother iPrint&Scan
MediaTo 8.5 × 72 in (long page)
WeightUnder 1.5 lb
Warranty1-year limited

How We Scored It

Scan Quality & Accuracy
25% of total score
7.0
Speed & Throughput
20% of total score
6.0
Software & OCR
20% of total score
6.5
Paper Handling & Versatility
15% of total score
6.5
Connectivity
10% of total score
6.0
Reliability & Value
10% of total score
7.5
Weighted Total Score 6.6 / 10

Category Deep-Dives

Scan Quality & Accuracy

7.0 / 10 25% weighting

The DS-740D captures at 600 dpi optical with 48-bit internal color depth, applying basic automatic correction. For a scanner this small and inexpensive, image quality is respectable — clean enough for legible, searchable documents.

It’s a step below the ScanSnap iX100 and Epson ES-60W on fine quality and processing, and the headline 1200 dpi figure is interpolated — software-invented pixels that add nothing real for documents. For everyday paperwork on the move, though, the capture does the job.

Bottom line on scan quality: Decent 600-dpi capture for a pocket scanner; fine for documents, though a notch below the premium portables.

Speed & Throughput

6.0 / 10 20% weighting

At 16 pages per minute, the DS-740D is slower per page than the ScanSnap and Epson portables. But there’s a meaningful asterisk: because it has single-pass duplex, it captures both sides of a sheet in one pass, so a two-sided document is no slower than a one-sided one — whereas the simplex portables would need a second pass and manual flipping.

Still, like all portables it feeds one sheet at a time with no ADF, so it’s not for batches. The duplex ability is its edge within the tier, not a path to high volume — which is why it lands in the amber band like the other portables on our throughput-weighted framework.

Bottom line on speed: 16 ppm with single-pass duplex — slower per page than other portables, but it captures both sides at once, which they can’t.

Software & OCR

6.5 / 10 20% weighting

The DS-740D uses Brother iPrint&Scan and bundled capture utilities. On a mobile unit like this, the software is more basic than what the desktop scanners offer — straightforward scanning, searchable-PDF output, and the essentials, without the deep automatic filing of ScanSnap Home or the polish of ScanSmart.

For a pocket scanner, that’s a reasonable match to the hardware — it gets pages captured and into usable files. Just don’t expect the document-organizing intelligence of the premium ecosystems.

Bottom line on software: Basic but functional Brother software — gets documents scanned and into searchable PDFs without frills.

Paper Handling & Versatility

6.5 / 10 15% weighting

Within the portable form factor, the DS-740D’s single-pass duplex is a genuine handling advantage — it’s the only scanner in this tier that captures both sides at once. It also takes long pages up to 72 inches and standard documents, fed manually one sheet at a time.

The limits are the familiar portable ones: no automatic feeder, so no batches, and you hand-feed each sheet. The duplex capability lifts it above the simplex portables on this measure, but it’s still a one-at-a-time device.

Bottom line on paper handling: Single-pass duplex is the standout, and it handles long pages — but single-sheet feeding with no ADF keeps handling modest.

Connectivity

6.0 / 10 10% weighting

Connectivity is where the DS-740D is most constrained, and it’s a deliberate design choice. It draws all its power over a single micro-USB 3.0 cable from a laptop or PC — there’s no battery to charge and no power adapter to pack, which is genuinely convenient. But it also means it’s USB-only with no Wi-Fi and can’t operate untethered.

So unlike the battery-and-Wi-Fi ScanSnap iX100 and Epson ES-60W, the DS-740D has to be plugged into a computer to scan — you can’t send pages straight to a phone or work with nothing connected. That’s the trade for its simplicity and low price, and the main reason its connectivity scores in the amber band.

Bottom line on connectivity: USB-powered and USB-only — no battery, no Wi-Fi. The simplest setup, but it must stay tethered to a computer.

Reliability & Value

7.5 / 10 10% weighting

The DS-740D is a simple, dependable device — fewer moving parts than a battery-and-radio portable — with a one-year limited warranty and a sturdy, sub-1.5-pound build made for a bag.

Value is its best argument: it’s the most affordable way to get single-pass duplex in a truly pocketable scanner, undercutting the premium portables. You accept USB-tethered operation and basic software in exchange. For a mobile worker who specifically wants two-sided capture on the cheap and is fine plugging into a laptop, it’s a sensible niche pick; anyone who needs untethered, wireless scanning should choose the iX100 or ES-60W instead.

Bottom line on reliability & value: Inexpensive, simple, and dependable, with a one-year warranty — strong value for a pocketable duplex scanner, if you don’t need wireless.

About the Manufacturer

Brother
Brother — ADS & DSmobile
Office Equipment · Est. 1908

Brother Industries, founded in Japan in 1908, makes printers, scanners, and office equipment worldwide. Its DSmobile line is dedicated to portable, USB-powered scanners, sitting alongside the desktop ADS range.

The DS-740D is a duplex DSmobile model — notable for capturing both sides of a page in one pass from a pocketable, bus-powered body, a capability most portables lack.

For home office buyers, the DS-740D represents Brother’s take on the budget portable: a simple, inexpensive, genuinely mobile duplex scanner for the laptop bag, for anyone who values two-sided capture and low cost over wireless freedom.

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