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Cisco CGS 2520 Hardware Installation Guide
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Chapter 1 Product Overview
Cable Side
Figure 1-2 Cisco CGS-2520-16S-8PC Cable-Side View
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
1SD flash memory card slot 6Dual purpose ports
2LEDs 7RJ-45 console port
3Express Setup button 8USB (mini-Type B) console port
4100BASE-FX SFP ports 9Power-input terminal
510/100 PoE ports 10 Alarm port
Cisco CGS 2520
POWER
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POWER
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