Can a stack be set up with CE switches in different versions

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Switches in different versions can be stacked. If the versions are inconsistent, the other member switches synchronize the software version of the master switch and then restart to join the stack again.

You are advised to upgrade the switches to the same version before stacking.

Other related questions:
Can CE series switches use stack cards to set up a stack
CE series switches cannot use stack cards to set up a stack.

Which cables can be used to set up a stack of CE series switches
Common Ethernet cables can be used to set up a stack of CE series switches, and no dedicated stack cable is required. Optical ports are connected using high-speed cables or optical modules and optical fibers, and electrical ports are connected using Category 6, Category 6A, or Category 7 cables.

Can GE ports on a CE switch be used to set up a stack
The GE ports on CE series switches cannot be used to set up a stack. 10GE ports with GE optical modules installed also cannot be used to set up a stack.

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