Инструкции По Установке для 3com 4800G
14
C
HAPTER
1: P
RODUCT
O
VERVIEW
Rear Panel
Figure 9 Rear panel of the Switch 4800G PWR 24-Port
Power Supply System
The Switch 4800G PWR 24-Port can adopt AC power input, or DC power input, or
both to provide backup.
both to provide backup.
■
AC power input
Rated voltage range: 100 VAC to 240 VAC, 50 Hz or 60 Hz
Rated voltage range: 90 VAC to 264 VAC, 47 Hz to 63 Hz
Only the RPS recommended by 3Com can be used for the Switch 4800G PWR
24-Port. The -48 VDC power supply in the equipment room cannot be used
directly. Otherwise, the device may be damaged.
24-Port. The -48 VDC power supply in the equipment room cannot be used
directly. Otherwise, the device may be damaged.
■
DC power input
Rated voltage range: -52 VDC to -55 VDC
Cooling System
The Switch 4800G PWR 24-Port is equipped with six fans for heat dissipation.
LEDs
For descriptions about LEDs, see Table 5. You can switch the Mode LED display
mode between speed, duplex, and PoE by pressing the Mode button on the panel.
mode between speed, duplex, and PoE by pressing the Mode button on the panel.
(7) LED for extended module slot 1
(8) LED for extended module slot 2
(9) Mode LED
(10) Mode button
(1) RPS port
(2) AC power socket
(3) Grounding screw
(4) Extended interface module slot 1
(5) Extended module slot 2
(1)
(2)
(3)
(4)
(5)
(1)
(2)
(3)
(4)
(5)
Table 5 Descriptions of the LEDs on the front panel of Switch 4800G PWR 24-Port
LED Mark
Status
Description
Mode LED
Mode Speed
Solid green
Rate of the port
Duplex Solid yellow
Duplex mode of the port
PoE
Flashing green (1 Hz)
PoE 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).
(POST).
Solid red
The system fails the POST or a power
failure occurs.
failure occurs.
Flashing yellow (1 Hz)
Some ports fail a POST or a port failure
occurs.
occurs.
OFF
The power is disconnected.