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10/100 Dual-Speed Switch User’s Guide
Identifying External Components
17
LED Indicators
The LED indicators of the switch include Power, Speed,
Link/Activity and Duplex Mode. The LED indicators are used to
facilitate monitoring and troubleshooting of the switch. The
following shows the LED indicators for the switch along with an
explanation of each indicator.
Figure 3.4 The DES-1008D Switch LED indicators
♦
Power This indicator lights green when the switch is
receiving power; otherwise, it is OFF. If this indicator is not
lit, check the DC power connector and wall jack to ensure
proper insertion of the power cord.
♦
10/100 The LED indicator lights green when a 100 Mbps
device is connected to a port or the uplink port. If a 10 Mbps
device is connected to a 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 the
analogous port. The LED indicators blink green whenever
there is reception or transmission (activity) of data occurring
at a port.
♦
FDX This LED indicator is green when a port is in full
duplex (FDX) mode and it is OFF for half duplex (HDX)
Power
DES-1008D
1
2
3
4
5
6
7
8
STATUS LEDs:
FDX (Green when full-duplex)
100M (Green when the respective port is operating at 100Mbps)
Link/Act (Green when linked, blinks green when active)
POWER LED
(Green)