[DG11] Adding an RMK10 to two axioms - switch not powering on

Hello

Trying to add a RMK10 to my setup.

I have two axiom 9's
a Raymarine HS5 network switch
an RMK -10 keyboard

I connect the two axiom network outputs to the HS5 (port 1&2)
I connect the RMK to the HS5 (port 3)
Since the HS5 is not PoE I connect the alternate power

When I power everything up the HS5 shows a green light on port 1&2, nothing for port 3.
The axiom power up fine and are networked.
the power button light on the RMK is lit but the rest of the rmk is not (dial, etc)

Trouble shooting I performed
I power everything down and connect the rmk to the master Axiom - pair keyboard everything works fantastically.
I switched the inputs to the HS5 axioms to port 1&3 and RMK to port 2 - ports 1&3 were green and port 2 was black

help appreciated~!