METRObility Optical Systems 8124-01-M - Manual (Page 27)

Using Expansion Modules 27
FX Module LED Indicators
The LEDs on each module indicate port activity. All LEDs are green.
• Link: On, indicates a link is up.
• TX: On, indicates a transmission in progress.
• RX: On, indicates receiving data.
• FDX: On, indicates the port is set to full duplex.
Off, indicates the port is set to half duplex.
• Collision: On, indicates collision occurring.
FX Module LEDs
NOTE: Fiber Modules support 100Mbps only.
Full Duplex
Collision
Link up
Transmit
Receive
3 Ports
Switch Module
FDX
COL
LINK
TX
RX
2