LED Description
• Solid green—Normal operation; fan powered and running at the
expected RPM
• Solid yellow—Fan failed—including incompatible airow
direction when you insert the PSU or fan trays with diering
airows
PSU LED
• O—No power
• Solid green—Normal operation
• Solid yellow—Power supply critical event causing a shutdown
• Flashing yellow—PSU warning event; power continues to
operate
• Flashing green, 1.0Hz—Standby mode
• Flashing green, 0.5Hz—AC power cord unplugged
LOCATOR LED/System Beacon
• O—Locator function disabled
• Flashing blue—Locator function enabled
7-Segment LED for stacking
• O—No power
• Solid green—Hex digit representing the stack unit ID
RJ-45 Ethernet Port LED
• O—no Ethernet activity detected
• Solid green—Ethernet activity detected
Table 2. System management Ethernet port LEDs
LED Description
Link LED
• O—No link
• Solid green—Link operating at a maximum speed,
autonegotiated/forced or 1G
• Solid yellow—Link operating at a lower speed, autonegotiated/
forced or 10/100M
Activity LED
• O—No link
• Flashing green—Port activity
NOTE: There are four LEDs for each SFP+ and QSFP28 port. For each port, 100GbE or 40GbE uses only one LED, 2x50GbE
uses two LEDs, and 4x25GbE or 4x10GbE uses all four LEDs.
Table 3. SFP+ port LEDs
LED Description
Link LED
• O—No link
• Solid green—Link operating at maximum speed, 10G
• Solid yellow—Link operating at a lower speed,1G
• Flashing yellow, 1 second on/o—port beacon
Activity LED
• O—No link
10 Z9264F-ON switch
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