1. Master LED
2. System LED
3. Power LED
4. Fan LED
5. Locator LED
6. SFP+ link/activity LEDs
7. Stack LED
8. USB port LED
9. QSFP+ link/activity LEDs
Table 27 S4048–ON LED behavior
LED
System Status/Health LED
Power LED
MASTER LED
FAN LED
PSU LED
LOCATOR LED
DELL EMC CONFIDENTIAL
Dell S4048-ON Switch FRUs
Description
Solid green—Normal operation
l
Blinking green—Booting
l
Solid amber—Critical system error
l
Blinking amber—Non-critical system
l
error, fan failure, or power supply failure
Off—No power
l
Solid Green—Normal
l
Solid amber—POST is in process
l
Blinking amber—Power supply failed
l
Off—Switch is in Stacking Slave mode
l
Solid green—System is in Stacking
l
Master or Standalone mode
Solid green—fan powered and running at
l
the expected RPM
Solid amber—fan failed including
l
incompatible airflow direction when you
insert the PSU or fan trays with differing
airflows
Solid green—Normal operation
l
Solid amber—Power supply critical event
l
causing a shutdown
Blinking amber—Power supply warning
l
event; power continues to operate.
Off—Locator function is disabled
l
Blinking blue—Locator function is
l
enabled
LED behavior
79