Networking New Axioms to old Seatalk HS switch

Have older network tied together w SeaTalkHS ethernet switch (8 RJ45 Ports)

I am getting new Axiom MFD's and Digital Radar. I am maintaining my CP370 ad transducer and SMartPilot.

Can I just buy Raynet to RJ45 adapter cables and plug all the new MFD's and Radar into the Seatalk HS switch?

Or do I have to upgrade to the newer HS5 Switch?