Netgear M4300-24X Prosafe

Good day,

I am trying to renew the HTTPS certificate on one of my Netgear M4300-24X Prosafe's but can't figure out how to do it, the switch currently has a self-signed certificate from the local MS Domain Enterprise CA server which was added by someone else.

I can't see how to generate a CSR to give to the Enterprise CA to generate a certificate or generate a certificate without a CSR, I can't find any documentation on how this is done.

Has anyone done this before and what are the steps?

Thanks