3Com 3C16896 8 slot AC Chassis manual Specifications for the 48-Port 10/100BASE-TX FE Module

Table 20

LED

LINK/ACT

18CHAPTER 1: SWITCH 7750 COMPONENTS

Figure 11 illustrates the front panel and LEDs of the 48-port 10/100BASE-TX FE module.

Figure 11 Front Panel of the 48-Port 10/100BASE-TX FE module

1 2

1 Ethernet port

2 Ethernet port LED

Each 100 Mbps Ethernet port has a green LED, indicating LINK/ACTIVE status.

Table 20 describes the 48-port 10/100BASE-TX FE module LED.

48-Port 10/100BASE-TX FE module LED

Description

Green — The port is connected.

Off — The port is not connected.

Green flashing — Data is being transmitted or received.

Table 21 describes the specifications of the 48-port 10/100BASE-TX FE module.

Table 21 Specifications for the 48-Port 10/100BASE-TX FE Module

Specification	Description
CPU	MPC850
BootROM	512 KB
SDRAM	64 MB
Dimensions (L X W)	366.7 x 340 mm (14.5 x 13.4 in)
Maximum power	75 W
consumption
Connector	RJ-45
Number of ports	48
Port transmission	10/100 Mbps half/full duplex
speed	MDI/MDIX auto-sensing
Cables and maximum	Cables are 2 100-ohm Category-5 twisted pairs up to 100 m (300 ft).
transmission distance
Compliance	IEEE802.3
	IEEE802.3u
	IEEE802.3x
	IEEE802.3ad
	IEEE802.1p
	IEEE802.1D
	IEEE802.1Q
	IEEE802.1X
	IEEE802.1s
	IEEE802.1w

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