Adding a new switch to stack

[laichenkang]

Hi

I want to add a new 3750G-24T to an existing stack of four 3750-24/48TS (Enhanced Image). 121-19.EA1d

Is it compatible? Do I need to upgrade IOS?

[Sven Hruza]

Hello,

I think that the switch is compatible.

And the master of the stack should update the new slave with his used IOS version.