3Com 7754 - Page 10

10 CHAPTER 1: SWITCH 7750 COMPONENTS
■ 4-port 1000BASE-X-GBIC submodule
■ 4-port 10/100/1000BASE-T submodule
For more information on these submodules, see “Fabric 32 Submodules”on
page 12.
Fixed Ports The Switch 7750 Fabric modules provide the following fixed ports:
■ Compact Flash (CF) Port
■ 1000BASE-X-SFP (PoE Fabric 96 only)
■ Console Port
■ Ethernet Port
Compact Flash (CF) Port
The Fabric module provides a CF port to accommodate a standard CF card, where
you can save logging information, host version information, alarming and other
diagnostic information. You can also use the CF port to upgrade software online.
1000BASE-X-SFP Ports
The PoE Fabric 96 provides four 1000 Mbps full-duplex SFP ports. Table 4 describes
the SFP cables for these ports.
Table 8 describes the LEDs of the SFP ports.
Tabl e 4 Cables for 1000BASE-T-SFP Modules
SFP Module
Central
Wavelength
Connector Matching Cable
Maximum
transmission
distance
1000BASE-SX-SFP 850 nm LC 50/125 µm
multimode
optical fiber
cable
550 m (1804 ft.)
62/125 µm
multimode
optical fiber
cable
275 m (902 ft.)
1000BASE-LX-SFP 1310 nm 9/125 µm single
mode optical
fiber cable
10 km (6 mi.)
1000BASE-LH-SFP 30 km (19 mi.)
1000BASE-ZX-LR-SFP 1550 nm 40 km (25 mi.)
1000BASE-ZX-VR-SFP 70 km (43 mi.)
1000BASE-T-FD-SFP RJ-45 100 m (328 ft.)
Tabl e 5 SFP Port LEDs
LED Description
LINK/ACT Off — The line is not connected.
Green — The line is connected.
Green flashing — Data is being transmitted or received.