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Table 2-1: LED Functionality
LED Function During Normal Operation
SERIAL Blinks yellow to indicate serial port activity.
PARALLEL Blinks yellow to indicate parallel port activity.
NETWORK Blinks yellow to indicate Ethernet activity.
OK Lights green (blinks occasionally) to indicate the unit is functioning properly.
GOOD LINK Lights solid green to indicate a working Ethernet connection (either 10BASE-T or
100BASE-T).
10/100 Lights solid green to indicate a 100BASE-T Ethernet connection. If the other LEDs
are functioning normally and this LED is not lit, it means that the connected
network is 10BASE-T.
POWER Lights solid green to indicate that the unit has power.