Chapter 1 Product Overview
Cable Side
1.SFP = small-form-factor pluggable.
2.PoE = Power over Ethernet.
Cable Side
The 10/100 Fast Ethernet downlink ports in Figure 1-1are grouped in pairs. The first member of the pair (port 1) is above the second member (port 2) on the left. Port 3 is above port 4, and so on. The dual-purpose ports are numbered 1 and 2.
Figure 1-1 Cisco CGS-2520-24TC Cable-Side View
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| 1 |   | SD1 flash memory card slot |   |   | 6 | RJ-45 console port | 
| 2 |   | LEDs |   |   | 7 | USB (mini-Type B) console port | 
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| 3 |   | Express Setup button |   |   | 8 | Power-input terminal | 
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| 4 |   | 10/100 ports |   |   | 9 | Alarm port | 
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| 5 |   | Dual purpose ports |   |   |   |   | 
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1. SD = Secure Digital
The100BASE-FX SFP ports and the 10/100 PoE ports are grouped in pairs. The first member of the pair (port 1) is above the second member (port 2) on the left. Port 3 is above port 4, and so on. The dual-purpose ports are numbered 1 and 2.
Cisco CGS 2520 Hardware Installation Guide