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Rear panel features – 3Com 2816-SFP Plus (3C16485) User Manual

Page 11

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4 Module Active LEDs

The Module Active LEDs shows the status of any SFP modules
that are installed.

5 Port Duplex LEDs

The second and fourth (bottom) row of Status LEDs, which are
colored yellow, show the duplex status of the related ports.

6 Power LED

The Power LED shows the power status of the Switch:

7 Self-adhesive Pads

The unit is supplied with four self-adhesive rubber pads.

Do not apply the pads if you intend to rack mount the unit.

If the unit is to be part of a free-standing stack, apply the pads
to each marked corner area on the underside of the unit. Place
the unit on top of the lower unit, ensuring that the pads locate
with the recesses of the lower unit.

Rear Panel Features

8 Power Supply

The Switch automatically adjusts to the supply voltage. Only use
the power cord that is supplied with the unit.

9 Recovery button

The recovery button reinitializes the Switch. This returns the
Switch to the factory default settings if, for example, you have
forgotten the default IP address, or forgotten your user name or
password.

Status

Meaning

Green

Fiber SFP is inserted in the slot.

Off

No fiber SFP is inserted in the slot.

Status

Meaning

Off

No link, not yet negotiated or the port is operating in
half-duplex mode.

Yellow

The port is operating in full-duplex mode.

Status

Meaning

Green

The unit is powered on and ready for use.

Off

The unit is not receiving power:

Check that the power cord is connected correctly.

If the unit still does not operate, contact your supplier.

Status

Meaning

Flashing
Green

Power-on self test is in progress.

Yellow

Power-on self test or loopback test failed. Switch is in fail-
safe mode.