This V.92 56K Data/Fax MDC Modem can be used to connect your laptop to a BBS, intranet, fax machine, as well as the Internet. Getting started is as easy as connecting your laptop to a working phone line and dialing your Internet service provider (ISP). It is capable of receiving up to 56 Kbps and sending up to 48 Kbps. However, due to FCC regulations, receiving speeds are limited to 53 Kbps (actual speeds may vary depending on line conditions). Moreover, with the advance HSP (Host Signal Processing) technology, this modem is easily upgradable. Upgrades can be accomplished by simply installing a newer driver. This product has been tested and validated on Dell systems to ensure it will work with your computer and is compatible with Dell Latitude C400 Notebook. It is supported by Dell Technical Support when used with a Dell system. This product includes the following parts: Internal Modem, Phone Cable, Hardware and Software