Brother has listed the DSmobile DS-640e Compact Portable Document Scanner ( UPC 012502684466 ) in the US online. At the time of writing, Amazon US has this model up as coming soon, with pre-order available. The price starts at $134.99 ( lowest price recorded on September 1, 2026 on Amazon US, check product page for updated pricing ).
The DS-640e is a portable single sheet fed scanner that takes its power from the same USB-C cable carrying the data, so there is no mains adapter to pack alongside it.
Let’s check out the specs and features of this model.
Specs and Features
The DS-640e uses a Single CIS (Contact Image Sensor) with an LED Array light source, and scans one side of a page at a time.
Brother rates it at up to 15ppm for A4 colour and mono, measured 1-sided at 300dpi. The Amazon listing quotes up to 16ppm – we would go with the 15ppm figure which is the one on Brother’s own datasheet.
Optical scan resolution is up to 600 x 600dpi, with an interpolated mode of up to 1,200 x 1,200dpi. Colour depth is 48-bit on input and 24-bit on output, with 256 levels (8 bit) of greyscale.
Duty cycle is rated at up to 100 sheets daily and up to 2,000 sheets monthly. Brother notes that the monthly figure is there to compare design durability between its own products rather than as a target to scan to.
When it comes to paper handling, it accepts widths from 50.8mm to 215.9mm and lengths from 86.4mm up to 1828.8mm (72 inches). Paper weight supported is 35gsm to 270gsm for single sheets, and paper thickness 0.04mm to 0.28mm.
It takes photos, paper, business cards, receipts and plastic cards, including embossed ones. Plastic cards go in landscape with the embossed face up, at a maximum of 86mm wide by 54mm long, and business cards at 89.3mm by 51.2mm. Card thickness is supported to 1.00mm for a plain plastic card and 1.24mm for an embossed one.
There is no display on this scanner. The control panel is LED and key only.
Scanner Functions
Supported file formats are TIFF, JPEG, PDF, Secure PDF, High Compression PDF, Searchable PDF and PDF/A-1b.
You can Save to PC, Attach to Email through your mail client, or Open in Application to send a scan straight into an image editor or word processor. Scan to Workflow is configured through Brother iPrint&Scan and sends scans directly to Dropbox, Google Drive, iCloud or OneDrive.
The image processing list is long: Auto Deskew, Auto Image Rotation, Detect End of Page, Auto Colour Detection, Skip Blank Page, Continuous Scan, Margin Setting, JPEG Compression, Greyscale Level Adjustment, B&W Level Adjustment, B&W Inversion, Colour Tone Adjustment, Colour Drop, Edge Emphasis, Edge Fill, Punch Hole Removal, Character Enhancement, Background Processing, 2 in 1 Scan, 1 to 2 Scan and Barcode Detection.
Read the footnotes before counting on all of that, because Brother marks a large share of these functions Windows only, including Punch Hole Removal, Character Enhancement, B&W Inversion, Colour Drop, Edge Emphasis, Edge Fill, Margin Setting, Background Processing, Auto Image Rotation, B&W Level Adjustment, Barcode Detection, 2 in 1 Scan and 1 to 2 Scan. Brother also states these functions are “all supported using downloadable software from the Brother Solutions Centre”, so they come from the software rather than the scanner itself.
Carrier Sheet Mode supports scanning documents up to A3 folded. The carrier sheet is an optional purchase, Part Number CS-A3401, sold in a pack of 2 and rated for 500 uses each.
Connectivity and Power
The local interface is a single USB 3.2 Gen 1 / Type-C port, and the scanner runs on USB bus-power.
Power draw is 2.6W scanning over USB 3.0 and 2.2W over USB 2.0, dropping to 1.4W in ready state and 0.01W when powered off. A Power Off Mode cuts consumption further when the scanner is not in use. Sound pressure is 53dB while scanning, and inaudible in ready state.
Drivers and Bundled Software
Brother supplies TWAIN and WIA drivers for Windows 10, Windows 11 and Server OS 2016, 2019, 2022 and 2025, ICA for macOS 14, 15 and 26, and SANE for Linux. Windows Server support covers the scanner driver only.
- Windows: Brother iPrint&Scan, Kofax Power PDF Standard v5, Remote Setup
- macOS: Brother iPrint&Scan for macOS, Remote Setup
Kofax Power PDF Standard v5 is the PDF editor in the bundle and the part that does the OCR, turning a scan into editable, searchable text instead of a flat image.
Size and Weight
The machine measures 301 x 50.6 x 36.8mm (WxDxH) and weighs 466g. Boxed, it comes to 377 x 162 x 76mm and 849g in Europe, or 878g in the Nordics. Brother states the packaging is 100% Expanded Polystyrene (EPS) free for easier recycling.
What’s in the box:
- DSmobile machine
- USB cable
- Quick setup guide
- Product safety guide
- Warranty
Note: The details above were taken from Brother’s own DS-640e datasheet and the Amazon US listing at the time of writing, and the two do not agree on scan speed. Check the official Brother product page or the Amazon US listing to confirm the full specifications before ordering.
Prices mentioned above are the lowest prices recorded on September 1, 2026, and may change once the scanner officially goes on sale.
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