Figure 2 Front Face of the EM
1 Port 0
2 Port 1
3 Port 2
4 Port 3
5 ATTN (attention) button
6 Attention LED
7 OK (power status) LED
8 Port speed LED
Note - As of this release, the face plate shows incorrect speed settings. The EM supports only 1GbE (1000Mbps) connections.
The following table explains how to interpret the behavior the port speed LED.
When you want to perform a hot-plug operation with an EM, press the ATTN button. This removes power from the slot the EM is in so it can be removed while the chassis remains powered up.
Note - Power remains present at the slot for a period of time after the ATTN button is pressed. This is referred to as the power transition period.
Caution - Do not insert or remove the EM during the power transition phase of a hot-plug operation. This power transition phase is the period just after the ATTN button is pressed when the EM may not be fully isolated from the power source.
In addition to the port status LEDs, there are two LEDs next to the ATTN button. The following table explains their meaning.