Hub State Indicators - D-Link DFE-2600 User Manual

Dual-Speed Stackable Hubs User's Guide
DFE-2624 / DFE-2624x Indicator Panel
DFE-2616 / DFE-2616x Indicator Panel

Hub State Indicators

Power Indicator
This indicator lights green when the hub is receiving power; otherwise, it
is off.
Collision Indicators (COL10 and COL100)
These indicators indicate data collisions on the respective 10Mbps Ether-
net or 100Mbps Fast Ethernet segments of the hub. (If several hubs are
stacked or linked together, all of them should detect and indicate the same
collision, since collisions span the entire network segment.) Whenever a
collision is detected, the respective COL indicator will briefly blink am-
ber.
16 Understanding Indicators