5
Getting Started Guide for the Catalyst Express 520 Switches
78-18063-02
Set Up the Switch
Step 3
Use the supplied Category 5 Ethernet cable to 
connect your PC or laptop to any of the 
downlink switch ports (such as port 1).
Before proceeding to the next step, wait until 
the port LEDs on the switch and your PC or 
laptop are green (either solid or blinking). 
The green port LEDs mean a successful 
connection between the two devices.
The ADMIN LED should still be blinking 
green.
Troubleshooting:
If the port LEDs are not solid green or if either 
port LED turns amber, make sure that:
• You connected the Category 5 Ethernet 
cable to one of the downlink switch ports 
(not to an uplink port such as the 
dual-purpose port).
• You are using the Category 5 Ethernet 
cable that shipped with the switch. If not, 
make sure that the cable that you are 
using is an undamaged Category 5 
Ethernet cable.
• The other device is turned on.
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