LED	Function
Power	A solid light indicates the modem is powered on.
Receive	When the light is flashing the modem is scanning for a receive channel connection. A solid light indicates the channel connection is acquired.
Send	When the light is flashing, the modem is scanning for the send channel connection. A solid light indicates the channel connection is acquired.
Online	When the light is flashing, the modem is scanning for the network configuration server connection. A solid light indicates the connection is acquired.
PC/Activity	When the light is flashing, the modem is transmitting or receiving data. When the light is off, the modem is not transmitting or receiving data.
Stand-by LED & Button	Press this button (located on the top of the modem) to disable the Ethernet and USB ports on the modem. No data will be transmitted or received. Press the button again to transmit and receive data. When the standby button is activated, all other lights turn off.

Surfboard SB5101 Model pictured. Other Surfboard models may have different look but will have similiar LED's.

User Guides:

• Quick Reference Guide
• Motorola SB5101 User Guide
• Motorola SB5102 User Guide
• Motorola SB5120 User Guide

Check that the electrical outlet is working.

If the Standby LED is on, the cable modem is in standby mode. Press the Standby button to reconnect Internet service.

Check the coaxial cable at the modem and wall outlet.

Check that the USB or Ethernet cable is attached at the modem and the computer.

Try to reset the modem by unplugging the power cord from the modem and wait 1 to 2 minutes.

If the cable modem has been moved to a different outlet please contact customer service to relocate the modem.

If you have a splitter feeding a TV on the same coaxial line as the cable modem, remove the splitter and connect the coaxial cable directly the modem.

If you have the modem connected to a router or hub, try cycle power on or bypass the hardware and plug the modem directly into the computer.

Restart Computer.