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Plustek MobileOffice S420 12ppm Portable Scanner (S420)

  • 48 bit CIS
  • 12 ppm/600 X 600 dpi
  • Share between two PCs
  • Email this page
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Designed with the reliability demanded by business users, and a price point attractive to home users, the MobileOffice S420 scanner will convert paper documents, rigid embossed cards, expense reports, business cards and more to searchable PDF with the touch of a button at a FAST 12 page per minute scan speed!

This third generation mobile scanner is powered by the USB bus and does not require external power. Scan to your PC, laptop or netbook, in your office, at the airport, in your truck, at your customer site or on the road. The included office dock allows you to share the S420 with two PCs in the office.

The MobileOffice S420 also features advanced image processing that allows you to scan mixed sized documents with no adjustments. Images are automatically straightened, rotated and adjusted for exposure. The result is more accurate Optical Character Recognition (OCR) and fewer pages that need to be rescanned. The included software productivity suite allows you to easily create and manage searchable PDFs. DocAction single touch scanning and industry standard TWAIN drivers ensure compatibility with thousands of scanning and imaging programs.

  • newegg Ultra-Portable Measuring 50 x 295 x 40 mm and weighing only 412g (scanner, stand not included), the Plustek MobileOffice S420 business card scanner is an ideal solution to convert your paper document to searchable PDF in your office or on the road. The USB-powered design enhances its portability.
  • newegg Work Efficiently and Effectively Easily and quickly digitize your paper documents with simplex scanning in color, grayscale or B/W at 12ppm scan speed. Advanced image enhancement automatically straightens and rotates pages, adjusts brightness, and crops images to minimize file size and increase OCR/BCR accuracy. The software productivity suite enables PDF, Microsoft Office, JPG TIF creation and management.
  • newegg Rigid Card Support In addition to paper documents, the MobileOffice S420 can handle rigid embossed cards such as licenses, insurance cards, membership cards for enhanced compatibility.
  • newegg Easy Operation 3 single-touch customizable buttons automate frequent scanning jobs, delivering the ultimate in ease of operation and efficiency.
  • newegg Detachable Dock With the included office dock, you can share the S420 between two computer, enhancing the productivity and maximizing your investment.

Learn more about the Plustek S420


Scanner: 50 x 295 x 40 mm (2.00" x 11.60" x 1.50")
Stand: 81 x 295 x 50 mm (3.10" x 11.60" x 2.00")
Scanner 412 g
Stand 413 g


Simplex Sheetfed
Element Type
Scanning Speed
Approx 12 ppm (200 dpi grayscale)
Color Depth
Hardware Resolution
600 dpi

Media Handling

Max. Document Size
216 x 355 mm (8.5" x 14") A 4 / legal size
Media Type
Rigid Card rigid cards like IDs, licenses, membership cards


USB Ports
Other Ports
office docking station

Hardware SPEC

Power Requirements
S420 USB Bus Power 5 V / 1 A (0.5A x 2 ports)
S420 with stand AC adapter DC 5V


Operating Systems Supported
Window 2000 / XP / Vista / 7
Mac compatible


USB powered mobile scanner

Scans to searchable PDF

Simplex Scanning in Color, Grayscale or B/W

Share between two PCs

Easily transportable

2 Single-touch customizable buttons automates frequent scanning jobs

Advanced image enhancement to automatically straighten and rotate pages, adjust brightness, and crop images to minimize file size and increase OCR accuracy

Software productivity suite enables PDF, Microsoft Office, JPG TIF creation and management


Software Included
Abbyy FineReader Sprint OCR, NewSoft image management, and HotCard business card recognition software
TWAIN drivers ensure compatibility with image enabled applications

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Plustek S420

Do you own this product? Write a Review

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  • Darrell B.
  • 3/5/2012 3:23:46 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsTerrible, returned immediatly

Pros: Cheep

Cons: The software is terrible, unusable, and incoherent. These do NOT produce scannable PDF, just an error message that "font is not recognized." Feed tray is simply ornamental, this will NOT scan multiple documents automatically.


Manufacturer Response:

Sorry you had problems with your scanner.

The scanner is configured from the factory to produce PDFs by pressing the PDF button on the scanner. I'm not sure what program is giving you the font error, but you are correct that the scanner does not have an automatic document feeder on it. The stand is only there to help guide the pages into the scanner.

If you have problems during installation, please call Plustek support in California at 714-670-7713. You can also go to and log a call there.

Did you find this review helpful? Yes No

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