3Com 7750 Series, Installation Manual

Page: 21 / 74

I/O Modules 21
Figure 12
48-port 10/100/1000BASE-T Module
Figure 13 illustrates the front panel and LEDs of the 48-port 10/100/1000BASE-T
module.
Figure 13 Front Panel of the
48-port 10/100/1000BASE-T
Module
1 Ethernet port
2 Ethernet port LED
Table 23 describes the 48-port 10/100/1000BASE-T module LEDs.
Table 24 describes the specifications of the 48-port 10/100/1000BASE-T module.
Table 23 48-port 10/100/1000BASE-T Module LED
LED Description
LINK/ACT Green — The port is connected
Off — The port is not connected
Green flashing — Data is being transmitted
Table 24 Specifications for the 48-port 10/100/1000BASE-T Module
Specification Description
CPU MPC8241
BootROM 512 KB
SDRAM 128 M
Dimensions (L X W) 366.7 x 340 mm (14.4 x 13.4 in.)
Maximum power consumption 70 W
Connector RJ-45
Number of ports 48
Port transmission speed 10/100/1000 Mbps half-/full-duplex MDI/MDI-X
auto-sensing
Cables and maximum
transmission distance Category 5 twisted pair with a maximum transmission
distance of 100 m (328 ft.)
Compliance 1EEE 802.3ab
1EEE 802.3
1EEE 802.3u
1EEE 802.3x
1EEE 802.1p
1EEE 802.1D
1EEE 802.1Q
1EEE 802.1X
1EEE 802.1s
1EEE 802.1w
3C16888
1 2
3C16888