D-Link 824TP User Guide - Page 6

Hub-to-Hub Connections with Twisted-Pair Cable Hub-to-hub connection between Model DE812TP+ Ethernet Hubs requires a 10BaseT crossover cable. In making a hub-to-hub connection involving a Model DE-816TP or Model DE-824 Ethernet Hub, there is the alternative of using a straight cable. Internal Crossover Features The Model DE-816TP Ethernet Hub and 24-Port Ethernet Hub feature internal cross-over alternatives for Port 1: Model DE-816TP Ethernet Hub The port numbered as Port 1 is identical with each of the other numbered ports. But Port 1 is specially equipped with an alternative connector, labeled " Uplink." The Uplink connector is wired to the same conductors as the Port 1 connector, but with certain pin positions interchanged to provide a cross-over, and thus allow use of a straight cable to make a hub-tohub connection. Keep in mind that the Uplink connector is not an independent port. It is only an alternative connector to Port 1, to facilitate hub-to-hub