3Com 3C16896 8 slot AC Chassis, 3C16895 7-slot Chassis, 3C16894 4-slot Chassis manual I/O Modules

Table 15

14CHAPTER 1: SWITCH 7750 COMPONENTS

Table 14 describes the 4-port 10/100/1000BASE-T submodule LEDs.

Table 14 4-Port 10/100/1000BASE-T Submodule LEDs

LED	Description
LINK	Off — The link is not operating.
	On — The link is operating normally.
ACT	Off — No data is being transmitted or received.
	Green flashing — Data is being transmitted or received.

Table 15 lists specifications of the 4-port 10/100/1000BASE-T submodule.

4-Port 10/100/1000BASE-T Submodule Specifications

Specification	Description
Connector type	RJ-45
Number of ports	4
Port speed	1000 Mbps full duplex
	100 Mbps half/full duplex
	10 Mbps half/full duplex
	MDI/MDI-X auto-sensing
Cable and maximum	Category 5 twisted pair up to 100 m (328 ft)
transmission distance

See “Electrical Port Connector” on page 78 for an illustration of the RJ-45 connector and MDI/MDI-X pinout details.

I/O Modules	The Switch 7750 provides multiple slots for I/O modules below the Fabric slots.
	The following I/O modules are supported:
	■ 48-port10/100BASE-T FE PoE Module (3C16891)
	■ 48-port10/100/1000BASE-T PoE Module (3C16890)
	■ 48-port10/100BASE-TX FE Module (3C16889)
	■ 48-port10/100/1000BASE-T Module (3C16888)
	■ 48-port100BASE-X SFP Module
	■ 20-Port10/100/1000BASE-T Module (3C16863A)
	■ 20-Port1000BASE-X-SFP Module (3C16862A)
	■ 12-port10/100/1000BASE-T and 4-port1000BASE-X SFP Module (3C168916)
	■ 12-port1000BASE-X SFP and 4-port10/100/1000BASE-T Module (3C186917)
	■ 8-port1000BASE-X GBIC Module (3C16858)
	■ 8-port10/100/1000BASE-T GE Module (3C16859)
	■ 100Base-FX SFP mode (3C16865915)

Consider the following when selecting I/O modules:

■You can configure several I/O modules of the same type

■Any combination of I/O modules can be inserted but only PoE I/O modules provide the features of power over Ethernet.