3Com 7754 Installation Manual

Also see for Switch 7754: Product guide Datasheet Datasheet Product guide Configuration guide

I/O Modules 251 Ethernet port2 Ethernet port LEDTable 31 describes the 20-port 1000BASE-X-SFP module LEDs.Table 32 lists specifications of the 20-port 1000BASE-X-SFP module.12-port10/100/1000BASE-Tand4-port 1000BASE-X SFPModuleThe 12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFP module provides 1210/100/1000 BASE-T ports and 4 1000BASE-X ports.Figure 22 illustrates the 12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFPmodule.Figure 22 12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFP ModuleFigure 23 illustrates the front panel of the 12-port 10/100/1000BASE-T and 4-port1000BASE-X SFP module.Table 31 20-Port 1000BASE-X-SFP Module LEDsLED DescriptionLINK/ACT Off — The port is not operating.On — The port is operating.Green flashing — The port is transmitting or received dataTable 32 Specifications for the 20-Port 1000BASE-X-SFP ModuleSpecification DescriptionCPU MPC8241LZU200BootROM 512 KBSDRAM 64 MBDimensions (L x W) 366.7 x 340 mm (14.5 x 13.4 in)Power consumption 35 WConnector SFP socketNumber of ports 20Transmission rate 1000 Mbps full duplexCable and maximumtransmission distance1000BASE-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 802.3zIEEE 802.1pIEEE 802.1QIEEE 802.1DIEEE 802.3xIEEE 802.3ad3C168916