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3Com 7754 - Page 21

3Com 7754
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I/O Modules 21
Table 26 lists the cables for the 48-port 100BASE-X (SFP) ports
24-port 100BASE-FX
MMF FE Module
The 24-port 100BASE-FX MMF FE module provides 24 100 Mbps multi-mode
Ethernet optical port service channels.
Figure 16 illustrates the 24-port 100BASE-FX MMF FE module.
Dimensions (L X W) 366.7 x 340 mm (14.4 x 13.4 in.)
Maximum power consumption 36.5 W
Connector LC
Number of ports 48
SFP module 100BASE-FX-MM-SFP
100BASE-FX-SM-SFP
100BASE-FX-SM-LR-SFP
100BASE-FX-SM-VR-SFP
Port transmission speed 100 Mbps full-duplex
Compliance 1EEE 802.3
1EEE 802.3u
1EEE 802.3x
1EEE 802.3ad
1EEE 802.1p
1EEE 802.1D
1EEE 802.1Q
1EEE 802.1X
1EEE 802.1s
1EEE 802.1w
Tab le 26 Cables for the 48-port 100BASE-X SFP Module
SFP module
Central
wave-
length Connector Matching cable
Maximum
transmission
distance
100BASE-FX-MM-SFP 1310nm LC multimode optical fiber
cable
2 km (1.2 mi)
100BASE-FX-SM-SFP 1310nm 15 km (9.3 mi)
100BASE-FX-SM-LR-S
FP
1310nm 9/125 µm single mode
optical fiber cable
40 km (24.9 mi)
100BASE-FX-SM-VR-S
FP
1550nm 70km (43 mi)
Table 25 Specifications for the 48-port 100BASE-X SFP Module (continued)
Specification Description

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