All-in-one printers are all the rage nowadays. To be noticed a gadget must go the distance and double as a MP3 player, personal organizer and a portable videogame device, for instance. All-in-one printers were pioneers in that particular field, combining printing, copying, scanning, and faxing functions. The Samsung SCX-4100 Digital Productivity Center does all that – minus faxing – in an affordable package.