If you have document files in your PC or Mac and you want to read in your kindle,you can transfer them via the USB cable or use AMAZON's whispernet via email,both free and paid.
Which kind of file formaats kindle Recognizes?
When purchaase or downloading ebook other types of non-DRM ebook on your kindle,youmust be sure that the file format is supported.By kindle default,the reader support originally the native kindle format in AZW and AZW1 as well alongside with standard text (TXT) file and unprotected Mobipocket formats.
Now what are the means to transfer files from your Pc or Mac to your Kindle
1. Transfering files via USB: Window and Mac users can easily download aand transfer kindle content and personal documents from their comuters to kindle readers via the USB connection.Computer recorggnise the kindle as a removal mass-storaage device and kindle screen goes to USB drive mode as its battery gets automatically recharged by the computer.Whispernet service is turned off temporarily aand your kindle cannot function as reading device while you ar in USB drive mode.
When kindle is seen as aa USB drive,your computer will show three default directories or folders under the kindle mass storage device: Documents,Audible and Music.
Transfer your documents or eBook files to the Documents folder and kindle will recognize documents if they are in the file format it recognizes,the files are in the document folder and these are unprotected or DRM-free.

2.Transfering files through email: You can convert your personal non-DRM documents in the approved file formats from your laptop or desktop computer to Kindle using the Personal Document Service offered via Whispernet. This is done by attaching these files to an e-mail sent to your Kindle’s e-mail address. A subject line in your email is not necessary. Your Kindle reader can only receive converted files from the email address you have specified on the “Manage Your Kindle page” in the Amazon site to prevent spam. Amazon can then transfer the converted files wirelessly to your Kindle for a schedule fee if it is in a WiFi range.You can send documents in any of these documents for conversion in ZIP, provided the document when unzipped is not more than 50 Mb in size. In addition, there should be no more than 24 separate personal documents attached to the email, zipped or otherwise. Approved personal documents 5 MB and below are ready for wireless auto-delivery to your Kindle within 5 minutes per document, excluding local wireless downloading time depending on location and file size. Personal documents above 5 MB may take longer.
Fees for transfer via Whispernet are based on the file size submitted for conversion prior to zipping, your country, and from where you’re accessing Whispernet. They are charged only for documents successfully received wirelessly to your Kindle. Within the US, the charge is $0.15/Mb. Outside the S, the charge is $0.99/Mb where there is access to Whispernet. US citizens travelling outside the US also gets charged by the same amount.
If you prefer to avoid the email transfer fees, or if you’re not within WiFi rage, you can send attached approved documents in the e-mail addressed to “name”@free.kindle.com and the converted files will be sent to your email address configured in your Amazon account log in. You simply download the converted files via USB to your Kindle. Personal documents 5 MB and below are typically delivered to the “name”@free.kindle.com address within 5 minutes (per document). Documents above 5 MB may take longer .

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