compatible with legacy ST40, ST60+, Raystar 125 GPS sensors and LifeTag Wireless Man Overboard Systems.
I tried to get it to work with a Simrad VHF to allow the Simrad to pull GPS data from a Raymarine MFD using SeatalkNG. It didn't work. If Raymarine says they don't support those legacy systems, I wouldn't bother. The newer device should still support Seatalk1.