Hello dariarossi1975,

 

You may look at the N3200 series:

 

Dell PowerSwitch N3200 Series

https://dell.to/3Ah9jEK

400G Stacking with up to 12 members

 

 

400Gbps stacking bandwidth using two 100GbE

QSFP28 integrated rear stacking ports.

https://dell.to/3OPIY4z

 

As a pre Sale question I would recommend contacting Sales and a technical sales rep can work with you.

They would know currently shipping switches and be able to supply you options per the criteria you provide them.