3Com 4800G Series, Getting Started Manual

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Switch 4800G 24-Port 9
Rear Panel
Figure 3 Rear panel of the Switch 4800G 24-Port
Power Supply System The Switch 4800G 24-Port can adopt AC input, or 12 V RPS input, or both to
provide backup. Only the recommended RPS can be used.
■
AC power input
Rated voltage range: 100 VAC to 240 VAC, 50 Hz or 60 Hz
Input voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz
■
RPS input
Rated voltage range: 10.8 VDC to 13.2 VDC
Cooling System The Switch 4800G 24-Port is equipped with four fans for heat dissipation.
LEDs For descriptions about LEDs, see Table 4. You can switch the Mode LED display
mode between speed and duplex by pressing the Mode button on the panel.
(3) Console port (4) 7-segment digital LED
(5) Power LED (6) RPS LED
(7) LED for extended module slot 1 (8) LED for extended module slot 2
(9) Mode LED (10) Mode button
(1) AC power socket (2) RPS port
(3) Grounding screw (4) Extended module slot 1
(5) Extended module slot 2
(1) (2)
(3)
(4)
(5)
(1) (2)
(3)
(4)
(5)
Table 4 LEDs on the front panel of the Switch 4800G 24-Port
LED Mark Status Description
Mode LED Mode Speed Solid green Rate of the port
Duplex Solid yellow Duplex mode of the port
Power LED PWR Solid green The switch is started normally.
Flashing green (1 Hz) The system is running a power-on
self-test (POST).
Solid red The system fails the POST or a power
failure occurs.
Flashing yellow (1 Hz) Some ports fail a POST or a port
failure occurs.
OFF The power is disconnected.