Cisco 2975 - Manual (Page 10)

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Catalyst 2975 Switch Hardware Installation Guide
OL-17784-01
Chapter 1 Product Overview
Front Panel
Figure 1-1 Catalyst 2975 Switch Front Panel
10/100/1000 PoE Ports
The 10/100/1000 PoE ports use RJ-45 connectors with Ethernet pinouts. The maximum cable length is
328 feet (100 meters). The 100BASE-TX and 1000BASE-T traffic requires Category 5, Category 5e, or
Category 6 unshielded twisted pair (UTP) cable. The 10BASE-T traffic can use Category 3 or Category
4 UTP cable.
The ports provide PoE support for devices compliant with IEEE 802.3af and also provide Cisco
prestandard PoE support for Cisco IP Phones and Cisco Aironet Access Points.
The switch delivers 15.4 W of PoE on any 24 of the 48 ports, or any combination of the ports deliver an
average of 7.7 W of PoE at the same time, up to a maximum switch power output of 370 W. On a per-port
basis, you can control whether or not a port automatically provides power when an IP phone or an access
point is connected.
For more information about port connections and port specifications, see the “10/100/1000 PoE Port
Connections” section on page 2-19 , and Appendix B, “Connector and Cable Specifications.”
SFP Module Slots
The switch has four Gigabit Ethernet SFP module slots. You can use any combination of these Cisco SFP
modules:
– 100BASE-FX multimode fiber (MMF)
– 1000BASE-BX
– 1000BASE-LX
– 1000BASE-SX
– 1000BASE-ZX
– 1000BASE-T
– Coarse wavelength-division multiplexing (CWDM)
1 Mode button and switch LEDs 3 SFP module slots
2 10/100/1000 PoE ports 1
1. Port numbering is from left to right, with port 1 on the far left. The first member of the pair (port 1) is above
the second member (port 2). Module slot numbers are 49, 51 upper, 50, 52, lower.
205075
Catalyst 2975G
Series PoE-48
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