3Com 7754 Installation Manual page 18

18 C 1: S 7750 C
HAPTER WITCH OMPONENTS
Figure 11 illustrates the front panel and LEDs of the 48-port 10/100BASE-TX FE
module.
Figure 11 Front Panel of the
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
Table 20
LED
LINK/ACT
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.
48-Port 10/100BASE-TX FE module
Description
Green — The port is connected.
Off — The port is not connected.
Green flashing — Data is being transmitted or received.