Allied Telesis AT-FS217 - Manual (Page 14)

Overview
4
Status LEDs
Table 2 lists the switch LEDs.
Table 2 AT-FS21x and AT-FS212/x Series Switch LEDs
External Power Adapter
The power adapter supplies 3.3V DC to the switch. Allied Telesyn supplies an
approved safety compliant AC power adapter for 3.3 V/1.5 A versions with an
unregulated output of 3.3V DC.
Auto MDI/MDI-X
An RJ-45 twisted pair port on a 10 Mbps or 100 Mbps Ethernet network
device can have one of two possible wiring configurations: MDI or MDI-X. The
RJ-45 port on a PC, router, or bridge is typically wired as MDI, while the
twisted pair port on a switch or hub is usually MDI-X.
To connect two 10 Mbps or 100 Mbps network devices together that have
dissimilar port wiring configurations, such as MDI to MDI-X, you use a
straight-through twisted pair cable. To connect two network devices that have
the same wiring configuration, such as MDI to MDI, you use a crossover cable.
The AT-FS21x and AT-FS212/x Series Switches feature automatic MDI/
MDI-X. Each port automatically determines the configuration of the port on
the device to which it is connected and then configures itself appropriately.
For example, if a port on a switch is connected to a port on a bridge, which is
typically wired as MDI, the port on the switch automatically configures itself
as MDI-X. This eliminated the need for using a crossover cable with these
switches.
LED Color Description
PWR Green Power is applied.
FX Green
Blinking
A link has been established on the fiber optic port
Activity has been detected on the fiber optic port.
TX Green
Blinking
A link has been established on the twisted pair port
Activity has been detected on the twisted pair port.
100M Green
OFF
The twisted pair port is operating at 100 Mbps.
The twisted pair port is operating at 10 Mbps.