Collision LED

This LED indicates the collision detected by the hub. The LED is normally off and it blinks when there are collisions. As the frequency of collisions on a network increases, the blink activities (on-time) of the LED also increase.

Link/Rx LED

Each TP port has one Link/Rx LED to indicate the link status and receiving activities of the connection to the attached device.

State	Indication	Interpretation
On	Normal	the UTP link is in good condition and no
		receiving activities are present.
Blink	Normal	the UTP link is in good condition and
		there receiving activities are present.
Off	Normal	No active device is connected at the
		other end of the UTP link.