DELL PC2748 User Manual

The following table describes the SFP LED indications.

The PowerConnect 2708/2716/2724/2748 has a Managed Mode push button on the front panel.  

The Managed Mode button is for changing between Managed Mode and Unmanaged (or 

Secure) Mode.  After a change from Unmanaged (or Secure) Mode to Managed Mode, the 

switch restores the configuration values to factory default settings.

From Unmanaged or Secure Mode (2748 only), pressing the Managed Mode button causes:

• Factory default configuration (192.168.2.1) is set as the switch IP address.
• Subnet mask changes to 255.255.255.0
• Graphical User Interface (GUI) login user name changes to 

Admin, and the password is not 

configured (appears blank), with Read/Write privilege.

• The DHCP client is set off.
• The device is rebooted.

Left LED 

Green Static

The port is linked at 1000 Mbps.

Green Flashing

The port is transmitting or receiving data at 1000 Mbps.

Amber Static

The port is linked at either 10 or 100 Mbps.

Amber Flashing

The port is transmitting or receiving data at 10 or 100 Mbps.

Off

The port is currently not operating

Right LED Green Static

The port is currently transmitting in Full Duplex mode.

Off

The port is operating in Half Duplex mode.

Green Static

Link is established.

Green Flashing Activity is occurring.
Off

No link is established.