Allied Telesis AT-MR840TF - Manual (Page 25)

AT-MR820TR Hub Installation Guide
5
Physical Description
The hub’s major components include the following:
❑ LEDs (port, hub, network)
❑ Eight Unshielded/Shielded Twisted Pair (UTP/STP) RJ45 ports
❑ One fiber uplink port (ST or SC)
❑ MDI/MDI-X switch
❑ AC power connector
LEDs
There are two network port LEDs for each port of the eight 10Base-T (RJ45)
ports: LINK OK and RECEIVE. These LEDs indicate whether the port is
linked, receiving data, or both. In general, port status LEDs show the
functionality of the port.
If the LINK OK LED lights green and the RECEIVE LED is flashing amber, a
signal is being received and the segment attached to the port is functional.
Table 1: AT-MR840TF Major Components
Component # Component Name
1 Ethernet Controller
2 Transceiver/Phy Interface
3 Ethernet MAU
4 Fiber Optic Transceiver
MR840TF_Book Page 5 Tuesday, November 11, 1997 3:46 PM