POWER1 LED and POWER2 LED
Green Light
: Power is ON.
Off
: Power is OFF. Or, an internal power fault.
STATUS LED
Green Light
: The system is normally operating.
Orange Light
: Starting up
Orange Blink
: Malfunction (Contact the seller.)
Off
: Power is OFF.
SD CARD LED
Green Light
: SD card inserted
Green Blink
: Reading/writing data
Orange Light
: SD card error
Off
: No SD card
STACK ID LED
Indicating “H” and the STACK ID alternately : Master switch
Indicating “h” and the STACK ID alternately : Backup master switch
Indicating the STACK ID
: Slave switch
Port LED (Port 1-24)
Green Light
: Link is established at 10/100/1000 Mbps.
Green Blink
: Transmitting and receiving data at 10/100/1000 Mbps.
: Shutting off due to loop detection and shutoff functions/storm controls/
BPDU guard
: Transmitting and receiving just the administration packets
Orange Light
Orange Blink
Off
: No devices are connected.
Port LED (SFP Port 21-24)
Green Light
: Link is established at 1000 Mbps.
Green Blink
: Transmitting and receiving data at 1000 Mbps.
: Shutting off due to loop detection and shutoff functions/storm controls/
BPDU guard
: Transmitting and receiving just the administration packets
Orange Light
Orange Blink
Off
: No devices are connected.
POWER1 LED
POWER2 LED
D
E
L
S
U
T
A
T
S
D
E
L
D
R
A
C
D
S
Port LED
STACK ID LED
13
Green Blink
: There’re one or some ports which are within 3 days after a loop resolution
*The following information is also displayed depending upon the device’s state.
“P” : Power failure
“11” : Fan1 failure
“12” : Fan2 failure
“13” : Fan1 or Fan2 failure
“L” : Within 3 days after a loop resolution
