Installation Guide

Figure 37: ExtremeSwitching X440-G2-24t-GE4 Rear Panel
1 = Grounding lug 3 = Redundant power input
2 = 1GBASE-X SFP ports 4 = AC power input socket
ExtremeSwitching X440-G2 Series Switch LEDs
The following sections describe the meanings of the LEDs on the ExtremeSwitching X440-G2 series
switches.
Table 9: X440-G2 Front Panel LEDs
Label or Type Color/State Meaning
M (Management) Slow blinking green (1 Hz) Normal operation
Fast blinking green (2 Hz) Power-on self test (POST) in progress
or
Switch diagnostics are running
Steady green POST passed: system is booting image
Blinking amber System is disabled: POST failed or system
overheated
O No external power is attached
S1, S2 (Stack
Management)
Steady green Link OK on the indicated stacking port
Blinking green Activity on the indicated stacking port
FAN Steady green Normal operation
Blinking amber Failure
O No power
Power Supply Unit (PSU) Steady green Normal operation
Blinking amber Input or output power failure
O No board power
Redundant Power Supply
(RPS)
Steady green Normal operation
Blinking amber Power failure
When RPS is present, no supply from PSU
O No RPS PSU is attached
ExtremeSwitching X440-G2 Series Switch LEDs ExtremeSwitching Switches
46 ExtremeSwitching Hardware Installation Guide