Black Box Modular Switches
Installation and User Guide (8/99)
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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
-45 ports have a “speed” LED indicating 100Mb when lit (or 10 Mbps when off). The fiber
port is always 100Mbps speed.
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
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
-mode fiber port.
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
-FP face plate in order
to maintain proper cooling air flow, and for
Fig.5.2.10 Blank Face Plate
