1-14
Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-03
Chapter 1 Product Overview
Front Panel Description
USB Console LED
The USB console LED shows whether there is an active USB connection to the port.
STACK
1
(stack member)
Off
No stack member corresponding to that member number.
Blinking green
Stack member number.
Green
Member numbers of other stack member switches.
PoE
2
Off
PoE+ or UPOE
is off.
If the powered device is receiving power from an AC power source,
the port LED is off even if the device is connected to the switch port.
Green
PoE+ or UPOE
is on. The port LED is green when the switch port
is providing power.
Alternating
green and
amber
PoE+ or UPOE is denied because providing power to the powered
device will exceed the switch power capacity.
Blinking amber PoE+ or UPOE is off due to a fault or because it has exceeded a limit
set in the switch software.
Caution
PoE+ and or UPOE faults are caused when noncompliant
cabling or powered devices are connected to a PoE+ or
UPOE port. Use only standard-compliant cabling to
connect Cisco prestandard IP Phones and wireless access
points or IEEE 802.3af-compliant devices to PoE+ or
UPOE ports. You must remove from the network any
cable or device that causes a PoE+ or UPOE fault.
Amber
PoE+ or UPOE for the port has been disabled.
Note
PoE+ or UPOE is enabled by default.
1.
Only Catalyst 3750-X switches.
2.
Only switches with PoE+ or UPOE ports.
Table 1-9
Meaning of Switch LED Colors in Different Modes (continued)
Port Mode
Port LED Color
Meaning
Table 1-10
USB Console Port LED
Color
Description
Off
USB console is disabled.
Green
USB console is enabled.
