Figure 16. 10GBase-T Module
1. 10GBase-T module port 1: LNK.
2. 10GBase-T module port 1: ACT. 
3. 10GBase-T module port 2: LNK.
4. 10GBase-T module port 2: ACT.
Table 6. 10GBase-T Module LEDs
Feature Detailed Description
Link/SPD LED (left bi-color LED)
• Off — no link.
• Solid green — link on 10 G speed.
• Solid amber — link on 100 M or 1 G speeds.
Activity LED (right single color LED)
• Off — no link.
• Blinking green — activity.
The stacking ports (shown in the following illustration) include LED displays for port status.
S3100 Series Hardware Overview
23