3. Making Network Connections
3.1 Dual-speed Twisted-pair Ports
Figure 3-1 16 Dual-speed TP Ports
The hub provides 16 dual-speed TP ports. Each can support one con-
nection to either a 10BASE-T Ethernet device or a 100BASE-TX Fast
Ethernet device using 2-pair UTP cable.
RJ-45 Connectors
Each of Port #1 to Port #15 provides one RJ-45 connector, which are
implemented as MDI-X jack. An MDI-X jack is designed with internal
crossover function. The function allows a connection to a computer us-
ing straight-through UTP cable. The Port #16 provides one MDI-X RJ-
45 connector and one MDI-I RJ-45 connector. Only one connector can
be used at the same time.
The pin definitions for MDI-X jack and MDI-I jack are as follows:
PIN#
MDI-X Jack
MDI-I Jack
1
Rx+
Tx+
2
Rx-
Tx-
3
Tx+
Rx+
6
Tx-
Rx-
4,5,7,8
NC
NC
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