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Hardware Installation Guide for the Cisco 4000 Series Integrated Services Router
OL-32185-02
Chapter 1 Overview of Cisco 4000 Series ISRs
Hardware Features of Cisco 4000 Series ISRs
Table 1-3 LED Descriptions (Applies to the Cisco 4221 ISR Router)
USB CON
(left)
USB Console
Active
Green Active console port is USB.
Note When this LED is on, the SER CON LED
will be off.
I/O side
2
All models
SSD
mSATA Slot Status Green SSD mSATA is present and enabled. Bezel side All
models.
Amber Initialized with error.
Off Not present.
POE0
POE PSU Green PoE is on and provides power. Bezel side All
models.
Amber PoE is in a failed condition.
Off PoE supply is not present.
ISC ISC Slot Status Green PVDM4 is present and enabled. Bezel side All models
Amber Initialized with error.
Off Not present.
FLASH System Flash
Status
Blinking
Green
Compact flash/eUSB flash is present and currently
being accessed.
Note Do not remove the flash device while the
system is powered on.
Bezel side All models
PWR System Power Green System power is on and system functions correctly. Bezel side All models
Green
blinking
System power is in the process of shutting down.
Amber System power is up, but low level initialization has
failed.
Amber
blinking:
System power is up, but the system has failed to
come out of reset.
Off System power is off.
1. Management Ethernet Link on bezel side on Cisco 4331 ISR.
2. These LEDs are on the bezel side for Cisco 4331 ISR
LED Represents Color Description Location
Available
On
LED Represents Color Description Location
Available
On
STAT System Status Solid green System operates normally. Bezel side All models
Blinking
amber
BIOS/Rommon is booting.
Amber BIOS/Rommon has completed booting, and system
is at Rommon prompt or booting platform software.
Off System is not out of reset or BIOS image is not
loadable.
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