Nortel Networks Media Dependent Adapter manual

•400-4TX MDA

Not supported on the Accelar Series Modules (see Table 2 on page 2)

•8100-4TX MDA

Supports BayStack 350/450, BayStack 410, and Accelar Series Modules (see Table 2 on page 2)

Both models use four 10/100BASE-TX RJ-45 (8-pin modular) port connectors to attach Ethernet devices.

The RJ-45 ports are configured as media-dependent interface-crossover (MDI-X) connectors. These ports connect over straight cables to the network interface controller (NIC) card in a node or server, similar to a conventional Ethernet repeater hub. If you are connecting to another Ethernet hub or Ethernet switch, you need a crossover cable unless an MDI connection exists on the associated port of the attached device.

The 10/100BASE-TX MDA ports can operate at either 10 Mb/s or 100 Mb/s. The port speed is determined through autonegotiation with its connecting device.

Table 3 describes the 10/100BASE-TX MDA components and LEDs.

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