This small, space-saving desktop addition for your Portégé 3410CT/3440CT provides an all-purpose connection to a full set of the usual desktop peripherals and connectivity ports, including USB, PS/2 and serial ports. However, the Multimedia Port Replicator also integrates Toshiba's unique SelectBay which provides access to the many SelectBay products available for the Tecra 8100. DVD drives, 2nd hard disk drives and CD-ROM drives are just a few of the compatible SelectBay products available.