8
Introducing the 3Com Unified Gigabit Wireless PoE Switch 24
3
LED Status Select Button:
This button sets the function of the Port LED indicators. When the button
is in the out position, the port LEDs show the port speed (see #2 above). When the button is pressed
in, the port LEDs show the PoE status.
4
SFP Module Slots (21–24):
The four Small Form Factor Pluggable (SFP) transceiver slots allow you to
install an SFP transceiver (purchased separately). These ports support fiber Gigabit Ethernet short-wave
(SX) and long-wave (LX) SFP transceivers in any combination.
When an SFP module is installed in a slot and is active, the associated RJ-45 port (21 to 24) of the
same number is disabled.
5
SFP Module Status Indicator:
The four SFP status LED indicators show the state of the SFP module
ports (21 to 24; see #4).
■
Green: An SFP fiber module is present.
■
Off: No fiber module is present.
When an SFP module is present, the fiber port activity is indicated by the corresponding LED over the
RJ-45 port (21 to 24):
■
Green steady: Fiber link is present.
■
Green flashing: Fiber link traffic is present.
■
Off: Link is not present
6
Fan Indicator:
Shows the status of the internal fans.
Green steady: All fans are functioning properly.
Amber steady: The switch is too hot.
Amber flashing: One or more fans have failed
7
System Indicator:
Shows the overall status of the switch.
■
Green steady: The switch is powered-up and operating normally.
■
Green flashing: The switch is undergoing self test, initialization, or downloading.
■
Amber steady: The switch has detected a hardware malfunction such as temperature, fan, or
voltage.
■
Off: No power. The switch is off.
8
Console Port:
Allows you to connect a terminal and perform out-of-band management. The default
communications settings are 19200 bps, 8 data bits, no Parity, 1 stop bit.
9
Reset Button:
Use the reset button to restore the switch to its factory defaults. See “Restoring the
Factory Default Settings” on page 29.
10
AC Power Input:
Accepts 100–240 Vac, 50/60 Hz input power. The switch automatically adjusts to
the input voltage.
11
Feet:
These are self-adhesive pads. You do not need to install them if you are rack-mounting the
switch.
Table 1
Features of the Unified Switch 24 (continued)
Reference
Description
