3Com 4800G Getting Started Manual page 14

14 C 1: P
HAPTER RODUCT
Rear Panel
Power Supply System
Cooling System
LEDs
Table 5 Descriptions of the LEDs on the front panel of Switch 4800G PWR 24-Port
LED Mark Status
Mode LED Mode Speed
Power LED PWR
O
VERVIEW
(7) LED for extended module slot 1
(9) Mode LED
Figure 9 Rear panel of the Switch 4800G PWR 24-Port
(1) (1)
(1) RPS port
(3) Grounding screw
(5) Extended module slot 2
The Switch 4800G PWR 24-Port can adopt AC power input, or DC power input, or
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.
DC power input
■
Rated voltage range: -52 VDC to -55 VDC
The Switch 4800G PWR 24-Port is equipped with six fans for heat dissipation.
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.
Solid green
Duplex Solid yellow
PoE Flashing green (1 Hz)
Solid green
Flashing green (1 Hz)
Solid red
Flashing yellow (1 Hz)
OFF
(8) LED for extended module slot 2
(10) Mode button
(2) (2)
(3) (3)
(2) AC power socket
(4) Extended interface module slot 1
Description
Rate of the port
Duplex mode of the port
PoE mode of the port
The switch is started normally.
The system is running a power-on self-test
(POST).
The system fails the POST or a power
failure occurs.
Some ports fail a POST or a port failure
occurs.
The power is disconnected.
(4) (4)
(5) (5)