3
LED Indicators
LED Indicators
The FriendlyNet Ethernet Hub contains the following LEDs:
❏Power LED
❏Collision LED
❏Link/Activity LED for each port
| 5VDC |
| LINK/ACT. |
PWR | 1 2 3 4 5 |
COL | |
Power LED | Link/Activity LEDs |
Collision LED
Figure 3-1 FriendlyNet (5-port) Ethernet Hub LEDs
Power LED
The green PWR (power) LED on the hub’s front panel illuminates when the hub is receiving power and is turned on.
Collision LED
The yellow COL (collision) LED on the hub’s front panel illumi- nates when two or more stations on the network attempt to trans- mit packets simultaneously.
Collisions are normal in Ethernet networks. Excessive collisions may indicate that your network is congested.
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