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Chapter 1: Product Description
22
Table 3 describes the system and port LEDs on the AT-GS900/16 and
AT-GS900/24 switches.
AC Power
Connector
Both the AT-GS900/16 and AT-GS900/24 switches have a single AC
power supply socket on the back panel. To power ON or OFF the switch,
you connect or disconnect the power cord.
See Figure 2 on page 18 for an illustration of the back panels. For the
input voltage range, refer to Appendix A, ”Power Specifications” on page
42.
Table 3. System and Port LEDs
LED State Description
POWER Green The switch is powered ON and operating
normally.
OFF The switch has no power.
L/A
Solid Green A valid 1000 Mbps link is established on
the port.
Solid
Orange
A valid 10 or 100 Mbps link is
established on the port.
Blinking
Green
A 1000 Mbps packet transmission and
reception is in process on the port.
Blinking
Orange
A 10/100 Mbps packet transmission and
reception is in process on the port.
OFF No link is established on the port.
D/C
Solid Green A full-duplex link is established on the
port.
Blinking
Green
The port is experiencing a collision in
half duplex mode.
OFF A half-duplex link is established on the
port.