100base-fx fiber optic port, 100base-tx twisted pair port, Mdi/mdi-x switch – Allied Telesis AT-MC303 User Manual
Page 13: System and port leds

AT-MC300 Series Installation Guide
3
100Base-FX Fiber Optic Port
The 100Base-FX fiber optic port can use either 50/125 or 62.5/125 micron
multimode fiber cabling and can operate up to a maximum distance of 2
kilometers (1.24 miles).
100Base-TX Twisted Pair Port
The 100Base-TX twisted pair port operates with Category 5 or better twisted
pair cabling and has a maximum operating distance of 100 meters (328 feet).
The port has an RJ-45 connector.
MDI/MDI-X Switch
The MDI/MDI-X (Media Dependent Interface/Media Dependent Interface with
Crossover) switch on the front panel of the unit eliminates the need for a
crossover cable when connecting a device to the twisted pair port on the media
converter. The MDI setting is typically used when connecting a DTE device
(such as a workstation or printer) to the twisted pair port. The setting of
MDI-X is typically used when connecting a switch to the port.
System and Port LEDs
Status LEDs are located on the front panel next to each port. Table 2 lists and
defines the LEDs.
Table 2 Status LEDs
LED
State
Description
System LEDs
PWR
Steady Green
Power is applied to the media converter.
M/L ON
Steady Green
The MissingLink feature is activated.
OFF
The unit is performing a Link Test.
FDX
Steady Green
The ports are operating in full-duplex mode.
OFF
The ports are operating in half-duplex mode.
Port LEDs
LNK
Steady Green
A link is established on the port.
ACT
Flashing Green
Data is being received or transmitted by the port.