Specifications

Overview 1-3
12E/2FE Port Adapter Receptacles, Cables, and Pinouts
If any of the above conditions are not met, or if the initialization fails for other reasons, the enabled
LED will not go on. Table 1-1 lists port LED status indications.
Table 1-1 12E/2FE Port LED Indications
12E/2FE Port Adapter Receptacles, Cables, and Pinouts
The interface connectors on the 12E/2FE port adapter are 14 individual RJ-45 receptacles. You can
use all 14 receptacles simultaneously. The first two receptacles support IEEE 802.3, Ethernet, and
IEEE 802.3u interfaces compliant with 10BASE-T and 100BASE-TX specifications. The remaining
12 receptacles support IEEE 802.3 and Ethernet interfaces compliant with 10BASE-T
specifications.
Note Use Category 3 unshielded twisted-pair (UTP) crossover cables when connecting 10-Mbps
12E/2FE interfaces (port 2 through port 13) to a hub. Use Category 3 UTP straight-through cables
when connecting 10-Mbps 12E/2FE interfaces to an end station.
Use Category 5 UTP crossover cables when connecting 10/100-Mbps 12E/2FE interfaces (port 0
and port 1) to a hub. Use Category 5 UTP straight-through cables when connecting 10/100-Mbps
12E/2FE interfaces to an end station.
12E/2FE interfaces do not support VLAN trunking.
Figure 1-3 shows the RJ-45 connectors. Table 1-2 lists the pinouts and signals for the RJ-45
connectors.
Port LED Status
LNK This green LED goes on and remains on when the port
is receiving a carrier signal from the network.
FDX
1
1 The FDX LED is present on port 0 and port 1.
This green LED remains off when the port is
configured for half-duplex operation.
This LED goes on and remains on when the port is
configured for full-duplex operation.
CO/FDX
2
2 The CO/FDX LED is present on port 2 through port 13.
This green LED remains off when the port is
configured for half-duplex operation and flashes on and
off when there is a transmission collision on the
network.
This LED goes on and remains on when the port is
configured for full-duplex operation.