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Installation & Safety Guide 17
Link and Mode LEDs for the AT-8648T/2SP switch
LED State Description
LINK OFF There is no link between the port
and the end-node.
Green A valid link has been established
between the port and the end-
node.
Mode - COL OFF No data collisions are occurring on
the port.
Flashing Green Data collisions are occurring on
the port.
Mode - SPD OFF The port is operating at 10 Mbps.
Green The port is operating at 100 Mbps.
Mode - FDX OFF The port is operating in half-duplex
mode.
Green The port is operating in full-duplex
mode.
Mode - ACT OFF There is no activity on the port
Flashing Green There is activity on the port.