
10/100 Fast Ethernet Switch User’s Guide
Identifying External Components
17
Mbps device is connected to the port or the uplink port, the
LED indicator is OFF.
♦
Link/Act
. These LED indicators are lighted up
green
when
there is a secure connection (or link) to a device at any of the
ports. The LED indicators blink
green
whenever there is
reception or transmission (i.e. Activity—Act) of data
occurring at a port.
♦
FDX/Col
. This LED indicator is
green
when a respective
port is in full duplex (FDX) mode. Otherwise, it is OFF for
half duplex (HDX) operations. It blinks
yellow
when
collisions are occurring on the respective port.