Dell PowerSwitch S4128F-ON Installation Manual page 14

Figure 13. S4148U-ON switch I/O-side LEDs
1. Unified QSFP28 and QSFP+ port LEDs—Link (right),
activity (left)
3. Master LED
5. Power LED
7. Locator LED/System beacon
Figure 14. S4100-ON Series PSU-side LEDs
1. Fan LED
3. PSU LED
Table 5. S4100–ON Series LED behavior
LED
System Status/Health LED
Power LED
Master LED
FAN LED
14 S4100–ON Series switch
2. Unified SFP+ and SFP+ port LEDs—Link (right), activity
(left)
4. System LED
6. Fan LED
8. Stack ID
2. Link LED
4. Activity LED
Description
● Solid green—Normal operation
● Blinking green—Booting
● Solid yellow (amber)—Critical system error
● Blinking yellow—Noncritical system error, fan failure, or
power supply failure
● Off—No power
● Solid green—Normal operation
● Solid yellow—POST is in process.
● Blinking yellow—Power Supply failure
● Off—Switch is in Stacking Slave mode.
● Solid green—Switch is in Stacking Master or Standalone
mode.
● Off—No power