3Com 7754 Installation Manual page 22

22 C 1: S 7750 C
HAPTER WITCH OMPONENTS
Figure 16 24-Port 100BASE-FX MMF FE Module
Each 100 Mbps optical port has a green LED, as shown in Figure 17.
Figure 17 Front Panel of the
1
2
1 Ethernet port
2 Ethernet port LED
Table 27 describes the status of the 24-port 100BASE-FX MMF FE module LEDs.
24-Port 100BASE-FX MMF FE Module
Table 27
LED
LINK/ACT
The 24-port 100BASE-FX MMF FE module requires a 62.5/125 µm multi-mode
optical fiber cable with an MT-RJ connector and a central wavelength of 1300 nm.
Table 28 describes the specifications of the 24-port 100BASE-FX MMF FE module.
Table 28 Specifications for the 24-Port 100BASE-FX MMF FE Module
Specification
CPU
BootROM
SDRAM
Dimensions (L x W)
Maximum power
consumption
Connector type
Number of ports
Port transmission speed
24-Port 100BASE-FX MMF FE Module
Description
Green — The port is connected.
Off — The port is not connected.
Green flashing — Data is being transmitted or received.
Description
MPC850
512 KB
64 MB
366.7 x 340 mm (14.5 x 13.4 in)
55 W
MT-RJ
24
100 Mbps, full-duplex
LEDs