Dimensions of scanner pad. tech requirements for a thumb drive. do i need another license for laptop just to transfer to desktop via thumb drive??

Hello, the A2 scanner mat dimensions is 660 x 480 mm. You refer to "thumb drive" is a manual button, its usage method can view the following video.

If i scan an a3 document, what is the dpi resolution? what about an a2 document? 300 dpi? 600 dpi?

I don't know the answer. If you email them, they are very responsive. It isn't a high resolution. I was trying to duplicate part of a near A2 document, 22 x 6. It came out readable and all, but was too small to display. So, I tried to do it in parts, and then enlarging the parts on my older 3-in-1 - but I could never get the parts to align in size. After many attempts I gave up and took the document to a wedding photographer who put it on the floor and climbed a ladder to get it all in actual size. The photo lab, which I had tried first, wanted it left and wouldn't allow me to make an appointment so I would be on hand while they did it. The photographer was the best bet. Sorry for not knowing the answer; I think they would tell you if that is your guiding principle.

How to connect and use this large format scanner?

Hello, The VIISAN book scanner is connected to the computer via USB. Then go to the VIISAN official website to download the OfficeCam software. After installation, you can use the scanner according to the user's instructions. If you have other questions, you can send us an email at Amazon, we will reply you in time.

Is the the file that is created is it at 100% accurate scale wise??

As far as I can tell, the software is not aware of the height you set the camera, so it is not.

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Description

📚 Elevate your scanning game—big, bright, and brilliantly smart!

MASSIVE A 2 CAPTURE AREA - Scan oversized journals, maps, and manuscripts with ease—up to 594x420 mm.
STUNNING 26 MP RESOLUTION - Capture every detail crisply with 5888x4522 pixels and software-enhanced 600 DPI clarity.
MULTI LANGUAGE OCR POWERHOUSE - Instantly convert scans into searchable PDFs and editable Word, Excel, EPUB, or TXT files.
SEAMLESS REMOTE COLLABORATION - UVC/UAC compliant for smooth video conferencing and live document sharing.
SMART AUTO FLATTEN FINGERPRINT REMOVAL - Say goodbye to curved pages and smudges with intelligent image correction tech.

The VIISAN S21 is a professional-grade large format document scanner designed for A2/A3 sized materials. Featuring a 26MP camera sensor with up to 600 DPI software-enhanced resolution, it delivers ultra-clear scans of journals, maps, and manuscripts. Its intelligent software auto-flattens curved pages, removes fingerprints, and supports multi-language OCR for converting scans into editable documents. Built-in 3-level LED lighting ensures clarity even in low light, while USB 2.0 connectivity and compatibility with Windows and macOS make it ideal for remote collaboration and video conferencing. Lightweight and foldable, it’s perfect for managers and creatives who demand precision and efficiency.

Specifications

Brand	VIISAN
Manufacturer	VIISAN
Model	S21-V
Model Name	A2 Document Camera
Product Dimensions	36 x 21 x 47.5 cm; 1 kg
Item model number	S21-V
Flash type	Internal
Operating System	Windows, macOS
Hardware Interface	USB 2.0
Resolution	5888x4522
Light Source Type	LED
Compatible Devices	Laptop
Special Features	Ideal for scanning large format journals, manuscripts, newspapers, maps, Receipt, Book, Text, Photo, Document, Business Card
Mounting Hardware	MIC
Number of items	1
Standing screen display size	7.2E+2 Millimetres
Aperture Modes	Fixed
Aspect Ratio	Unknown
Optical Sensor Resolution	23 MP
Minimum Shutter Speed	0.0166667
Audio Output Type	Speakers
Video Capture Resolution	1080p at 30fps
Wattage	5 Watts
Batteries Included	No
Batteries Required	No
Connector Type	USB
Description of flash modes	Fixed
Media type	USB
Viewfinder type	LCD screen
Has audio recording capabilities	Yes
Has Auto Focus	No
Includes Rechargeable Battery	No
Is there a timer?	No
Manufacturer	VIISAN
Item Weight	1 kg

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