3Com 3C16895 - Manual (Page 20)

20 C HAPTER 1: S WITCH 7750 C OMPONENTS
Figure 11 Front Panel of the 48-Port 10/100BASE-T Auto-sensing FE module
1 Ethernet port
2 Ethernet port LED
Each 100 Mbps Ethernet port has a green LED, indicating LINK/ACTIVE status.
Table 21 describes the 48-port 10/100BASE-T Auto-sensing FE module LED.
Table 22 describes the specifications of the 48-port 10/100BASE-T Auto-sensing FE
module.
See “Electrical Port Connector” on page 68 for an illustration of the RJ-45
connector and MDI/MDI-X pinout details.
48-port
10/100/1000BASE-T
Module
The 48-port 10/100/1000BASE-T module provides 48 10/100/1000 Mbps
auto-sensing Ethernet electrical ports.
Figure 12 illustrates the 48-port 10/100/1000BASE-T module.
Table 21 48-Port 10/100BASE-T Auto-sensing FE module LED
LED Description
LINK/ACT Green — The port is connected
Off — The port is not connected
Green flashing — Data is being transmitted
Table 22 Specifications for the 48-Port 10/100BASE-T Auto-sensing 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
consumption 55 W
Connector RJ-45
Number of ports 48
Port transmission
speed 10 Mbps half/full duplex
100 Mbps half/full duplex
MDI/MDIX auto-sensing
Cables and maximum
transmission distance Cables are 2 100-ohm Category-5 twisted pairs up to 100 m (300 ft).
Compliance IEEE802.3
IEEE802.3u
IEEE802.3x
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