
Front-Panel Description
Catalyst 1900 Series Installation and Configuration Guide
1-6
The model with two fiber-optic ports (A and B) use MT-RJ connectors and have a
fiber-optic wavelength of 1300 nanometers. To connect each fiber-optic port on the switch
to an SC or ST port on a 100BaseFX-compatible device on your network, you must use the
appropriate MT-RJ fiber-optic patch cable. You can order MT-RJ patch cables from your
cable vendor, or you can order these cables from Cisco:
• CAB-MTRJ-SC-MM-1M (1-meter, MT-RJ-to-SC multimode cable)
• CAB-MTRJ-SC-MM-3M (3-meter, MT-RJ-to-SC multimode cable)
• CAB-MTRJ-SC-MM-5M (5-meter, MT-RJ-to-SC multimode cable)
• CAB-MTRJ-ST-MM-1M (1-meter, MT-RJ-to-ST multimode cable)
• CAB-MTRJ-ST-MM-3M (3-meter, MT-RJ-to-ST multimode cable)
• CAB-MTRJ-ST-MM-5M (5-meter, MT-RJ-to-ST multimode cable)
For connection information, see the “Connecting to the Switched 100-Mbps Fiber-Optic
Ports” section on page 2-29.
LEDs and Modes
You can use the LEDs to monitor switch activity and performance by using the Mode button
to select the modes in which the port LEDs operate (Figure 1-3).
Figure 1-3 LEDs and Mode Button
Port LEDs
Port mode LEDs
Redundant power
system LED
H9261
1x 2x 3x 4x
Mode
button
System status LED
26604
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