3com 3C16894 4-slot Chassis User Manual
14
C
HAPTER
1: S
WITCH
7750 C
OMPONENTS
Table 14 describes the 4-port 10/100/1000BASE-T submodule LEDs.
Table 15 lists specifications of the 4-port 10/100/1000BASE-T submodule.
See “Electrical Port Connector” on page 78 for an illustration of the RJ-45
connector and MDI/MDI-X pinout details.
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:
The following I/O modules are supported:
■
48-port 10/100BASE-T FE PoE Module (3C16891)
■
■
48-port 10/100BASE-TX FE Module (3C16889)
■
■
■
■
20-Port 1000BASE-X-SFP Module (3C16862A)
■
■
■
8-port 1000BASE-X GBIC Module (3C16858)
■
■
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.
provide the features of power over Ethernet.
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
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
transmission distance
transmission distance
Category 5 twisted pair up to 100 m (328 ft)