
On
Off
When the Power LED light is on, the Switch is receiving power.
When the Power LED light is off, the power cord is improperly connected.
CPU (Management Indicator)
Blinking  | :  | When the CPU is working, the System LED is blinking.  | 
  | 
  | 
  | 
On/Off  | :  | The CPU is not working.  | 
  | 
  | 
  | 
Ports 1-24  Status LEDs
Link/Act
On  | When the LED light is on, the respective port is connected to  | 
  | the 10/100Mbps Ethernet network.  | 
Blinking  | When the LED light is blinking, the port is transmitting or  | 
  | receiving data on the 10/100Mbps Ethernet network.  | 
Off  | No link.  | 
  | 
  | 
100Mbps
On
Off
When the LED light is on, the respective port is connected to a 100Mbps Ethernet network.
When the LED light is off, the respective port is connected to a 10Mbps Ethernet network, or no link.
Ports 25 & 26 Status LEDs
Link/Act
  | On  | When the LED lights on, the respective port is connected to a  | 
  | 
  | 10/100/1000Mbps Ethernet network.  | 
  | Blinking  | When the LED is blinking, the respective port is transferring or  | 
  | 
  | receiving data on a 10/100/1000Mbps Ethernet network.  | 
  | Off  | No link.  | 
  | 
  | 
  | 
  | 1000Mbps | |
  | On  | When the LED lights on, the respective port is connected to a  | 
  | 
  | Gigabit Ethernet network.  | 
  | Off  | The respective port is connected to a 10/100Mbps Ethernet  | 
  | 
  | network, or no link.  | 
  | 100Mbps | 
  | 
  | On  | When the LED lights on, the respective port is connected to a  | 
  | 
  | 100Mbps Fast Ethernet network.  | 
  | Off  | When the LED light is off, the respective port is connected to a  | 
  | 
  | 10Mbps or Gigabit Ethernet network or there is no link.  | 
Option Ports 25~26 SFP(Mini GBIC) Status LEDs
Link/Act
On  | :  | When the SFP(Mini GBIC) module is installed and connected to a  | 
  | 
  | network, the Link/ACT LED lights on.  | 
  | 
  | 
  | 
Blinking  | :  | When the LED is blinking, the SFP(Mini GBIC) module is  | 
  | 
  | receiving data on a network.  | 
  | 
  | 
  | 
Off  | :  | No link.  | 
  | 
  | 
  | 
1000Mbps
On  | :  | When the 1000Mbps LED lights on, the respective port is  | 
  | 
  | connected to a 1000Mbps Gigabit Ethernet network.  | 
  | 
  | 
  | 
Off  | :  | When the respective port is disconnected to the network.  | 
  | 
  | 
  | 
5