Allied Telesis AT-FS724 - Manual (Page 43)

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The switch LEDs indicate proper operation or problems with the port
and power. Table 3-1 describes the switch LEDs.
Table 3-1 Switch LEDs
LED Color State Description
POWER (system) Green On The switch is receiving power, voltage is
within the acceptable range, and the
power supply is working.
Off No power.
FAULT (system) Red On The switch is malfunctioning.
Flashing The switch is booting, running
diagnostics, writing images to FLASH, or
transferring files via XMODEM.
Off Normal operation.
Link/Receive
(port, top row) Green On There is a physical link with a device.
Flashing The port is receiving packets.
Off No link.
100M
(port, bottom row) Amber On The port is operating at 100 Mbps, or is
manually configured to 100Base-TX.
Off The port is operating at 10 Mbps.