You can transfer files from your computer to your nook using a USB connection. Supported files include ePub and PDB files, as well as MP3s, PDFs, JPG, GIF, PNG, or BMPs. ePub and PDB files are eBook formats whereas MP3s are music files, PDFs are documents, and JPG, GIF, PNG, and BMPs are picture formats. Pictures can be setup as a background wallpaper on the nook or as a screensaver. Nook supports all eBooks, eMagazines and eNewspapers sold at Barnes & Noble.com. The nook contains Reader® Mobile technology provided by Adobe Systems Incorporated.