3Com 7754 - Page 25

I/O Modules 25
1 Ethernet port
2 Ethernet port LED
Table 31 describes the 20-port 1000BASE-X-SFP module LEDs.
Table 32 lists specifications of the 20-port 1000BASE-X-SFP module.
12-port
10/100/1000BASE-T
and
4-port 1000BASE-X SFP
Module
The 12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFP module provides 12
10/100/1000 BASE-T ports and 4 1000BASE-X ports.
Figure 22 illustrates the 12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFP
module.
Figure 22 12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFP Module
Figure 23 illustrates the front panel of the 12-port 10/100/1000BASE-T and 4-port
1000BASE-X SFP module.
Tab le 31 20-Port 1000BASE-X-SFP Module LEDs
LED Description
LINK/ACT Off — The port is not operating.
On — The port is operating.
Green flashing — The port is transmitting or received data
Tab le 32 Specifications for the 20-Port 1000BASE-X-SFP Module
Specification Description
CPU MPC8241LZU200
BootROM 512 KB
SDRAM 64 MB
Dimensions (L x W) 366.7 x 340 mm (14.5 x 13.4 in)
Power consumption 35 W
Connector SFP socket
Number of ports 20
Transmission rate 1000 Mbps full duplex
Cable and maximum
transmission distance
1000BASE-SX-SFP (multi-mode optical fiber, short haul)
1000BASE-LX-SFP (single mode optical fiber, 1310 nm)
1000BASE-LH-SFP (single mode optical fiber, 1310 nm)
1000BASE-ZX-LR-SFP (single mode optical fiber, 1550 nm)
1000BASE-ZX-VR-SFP (single mode optical fiber, 1550 nm)
Compliance IEEE 802.3z
IEEE 802.1p
IEEE 802.1Q
IEEE 802.1D
IEEE 802.3x
IEEE 802.3ad
3C168916