The decryption broker feature is supported by which three Palo Alto networks firewall series

See the explanation section

Explanation:

Decryption broker features is supported for the following:

PA-7000 Series devices

PA-5200 Series devices

PA-3200 Series devices

The model supported by the decryption broker features include:

VM-300 model

VM-500 model

VM-700 models.

They usually requires SSL Forward Proxy decryption to be enabled, where the firewall is established as a trusted third party to session traffic.