500 Series Stackable Managed Switches 11
TIP The default stack ports on the 500X are XG3/S1 and 
XG4/S2. If the correct module is plugged into XG3/S1 and 
XG4/S2, the switch should be able to detect the connection 
and configure the speed according to the module capability 
without any manual configuration. The 5G/S1 and 5G/S2 
interfaces on the 500X need to be configured manually via 
the CLI or web-based interface in order to utilize these ports 
as stack ports.
TIP The default stack ports on the 500 are S3 and S4. If the 
correct module is plugged into S3 and S4, the switch should 
able to detect the connection and configure the speed 
according to the module capability without any manual 
configuration. The S1 and S2 interfaces on the 500 need to be 
configured manually via the CLI or web-based interface in 
order to utilize these ports as stack ports. 
The default stack ports on a switch function as regular Ethernet ports only 
if you configure them to do so, or if the switch is configured to operate in 
standalone mode. You cannot mix the stack speeds between the switches 
or ports.
TIP By default, SG500XG-8F8T is in standalone mode and has no stack 
port. 
Any of the ports on the SG500XG-8F8T switch can be 
converted to a stack port. If you manually assign a Unit ID to one 
unit, you should manually assign Unit IDs to all units. Using both 
system-assigned and manually-assigned IDs in your network can 
impact system performance.
WARNING Stack ports must be either configured with the same port 
speed or have the same speed capability on the module/cable 
plug in. If the port speed is configured as auto, then the module 
plugged into these two ports will need to have the same speed 
capability, otherwise the switch will not be able to form as a 
stack with multiple units.
A stack can have up to eight 500 series switches in it.
Switches in the same stack are connected together through their stack 
ports. Depending on the type of stack ports and the desired speed, you 
may need regular Cat5 or better Ethernet cables and/or Cisco approved 
modules or cables for the 500 Series switches.