- CD-R Duplicators and Printers, Diskette Duplicators, Diskette Drives and USB Products from DPN. DPN Distributes Quality Industrial High Speed Software Duplication and Printing Equipment for CD-R, DVD-R and Diskettes. DPN also Distributes USB Products for Windows based Personal Computers, Hand Held PC's, and Personal Digital Assistants (PDA's).www.dpninc.com