Cisco Systems CGS252016S8PC manual 10/100 Fast Ethernet Ports, PoE Ports

Chapter 1 Product Overview

Cable Side

Figure 1-2 Cisco CGS-2520-16S-8PC Cable-Side View

1 3 5 6 7 8 9

POWER

POWER

OVER

OVER

ETHERNET

ETHERNET

Cisco CGS 2520

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2	4	10
1	SD flash memory card slot		6	Dual purpose ports
2	LEDs		7	RJ-45 console port
3	Express Setup button		8	USB (mini-Type B) console port
4	100BASE-FX SFP ports		9	Power-input terminal
5	10/100 PoE ports		10	Alarm port

10/100 Fast Ethernet Ports

You can set the 10/100 ports on the switch to operate in any combination of half duplex, full duplex, or 10 or 100 Mb/s. You can set the ports for speed and duplex auto-negotiation. The default setting is auto-negotiate.

When set for auto-negotiation, the switch determines the speed and duplex settings of the attached device, and advertises its own capabilities. If the connected device also supports auto-negotiation, the switch negotiates the best connection (the fastest line speed that both devices support and full-duplex transmission if the attached device supports it), and configures itself accordingly. In all cases, the attached device must be within 328 feet (100 meters).

PoE Ports

Warning Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if interconnections are made using uninsulated exposed metal contacts, conductors, or terminals. Avoid using such interconnection methods, unless the exposed metal parts are located within a restricted access location and users and service people who are authorized within the restricted access location are made aware of the hazard. A restricted access area can be accessed only through the use of a special tool, lock and key or other means of security. Statement 1072

The 10/100 PoE ports on the Cisco CGS-2520-16S-8PC-C switches provide PoE support for devices that are compliant with IEEE 802.3af. The Cisco prestandard PoE is also supported for Cisco IP Phones and Cisco Aironet Access Points. The PoE ports on the switch deliver up to 15.4 W of PoE. Any four of the eight ports are designated as high priority PoE ports, while other four ports are designated as low priority

Cisco CGS 2520 Hardware Installation Guide

78-19377-02 1-3