What do the LEDs indicate on DES‑1200M?

LED Indicators



The red power indicator is illuminated when power is provided tothe switch and the switch is turned in the ON position.


Green Link/Activity indicators are illuminated when the switchdetects a connection to that port. The indicator blinks when datais transmitted over the network connected to that port.

When a port is not connected, the indicator is off.

Full Duplex/Col

Red Full Duplex/Col indicators are illuminated when that port isin full duplex mode. The indicator is off when that port is in halfduplex mode.

When a collision occurs on the network connected to a port, thatFull Duplex/Col indicator blinks.


Green 100Mbps indicators are illuminated when the port isoperating in 100Mbps mode. The indicator

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