This is a modular expansion product which starts as a 4-port USB hub. But the cool part is that you can take it apart, and then add the modules that you need. At this point, the currently available expansion modules are a 4-port USB hub, a serial DB-9 module, a SCSI module, and a DIN 8 serial module. Slated for the future is an ISDN module, an HPNA (Home Phone Line Networking) module, and an ADSL module.
This product is current available for the PC, and is slated for release on the Mac in September 2000. Pricing has not yet been set.