3Com 3C780 User Guide - Page 40
STP Media Port Module, UTP Media Port Module
UPC - 662705029917
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1-14 Overview STP Media Port Module Figure 1-8 shows the front panel of the six-port STP media port module. All of its ports are configured as M ports by default. You can specify any port configuration for the attachment ports, but you must use a special connector called the STP cascade connector to configure the leftmost attachment port as S. To configure the attachment ports as B and A requires two cascade connectors. Refer to Chapter 2 for additional information on the STP cascade connector. GRN = SIGNAL DETECT GRN = PORT STATE YEL = LINK ERROR ® PWR STP PORT MODULE Figure 1-8. STP Media Port Module, Front Panel If you install an STP module in each of the three hub slots, 18 STP ports are available. UTP Media Port Module Figure 1-9 shows the front panel of the UTP media port module, which provides eight ports configured as M ports by default. You can specify any port configuration (B/A, S/M, or M/M) for the attachment ports. No adapter or special connector is needed for the UTP module. If you install three UTP modules in the hub, 24 UTP ports are available. GRN = SIGNAL DETECT GRN = PORT STATE YEL = LINK ERROR ® PWR UTP PORT MODULE Figure 1-9. UTP Media Port Module, Front Panel