Adding switch to existing network

[MartinBen439]

We have a 42u rack cabinet with 2 x 24-port switches already in.

I need to fit another switch - do I just connect it to one of the others via Cat5/6

Sorry if it is a noob question.

 

[MartinBen439]

It is an unmanaged switch so thanks for your reply

All 3 switches are the same make & model.