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Black Box Modular Switches
Installation and User Guide (8/99)
42
Each 3+1 combo 4-port has an Activity (ACT) LED indicating packets being received,
a Link (LK) LED that indicates proper connectivity with the remote device when lit, a
FDX/HDX LED to indicate full
-duplex mode when lit (or half-duplex when off). In addition, the
RJ
-45 ports have a “speed” LED indicating 100Mb when lit (or 10 Mbps when off). The fiber
port is always 100Mbps speed.
5.2.8
LE1427C, “3TP + 1F” 3 10/100Mb RJ-45 and 1 100Mb Fiber ST (multi-mode)
Connector Combo 4-Port
The LE1427C is also a Combo 4
-port, supports three auto-negotiating twisted pair ports at
10/100Mbps and one fiber port with 100Mbps multi
-mode similar to the FX SC connector. It
has the same LEDs indicating port activity (ACT), Link (LK), (10/1
00) Speed, FDX/HDX
operational and the FDX LED for multi
-mode 100Mbps fiber optic transceiver module, similar
to the LE1426C.
5.2.9
LE1429C, “3 + 1” 3 10/100Mb RJ-45 and 1 100Mb Fiber SC Single-mode
Connector, “Combo” 4-Port Module
The LE1428C is also a 3+1 Combo 4-port module. It is the same as the LE1426C
“3+1 combo” module except the fiber port is single
-mode. See Section 5.2.3 for a description of
the 100Mb single
-mode fiber port.
5.2.10
4PM-FP
The 4PM-FP is a blank face plate that must be installed in empty 4PM slot. When the
LE14XXA chassis contains less than required
front mounted 4PMs, the empty front slots must
be covered with the 4PM
-FP face plate in order
to maintain proper cooling air flow, and for
safety, etc.
Fig.5.2.10 Blank Face Plate