Switch connection question


A modem/switch question- 

With my Innuos PhoenixNET/Zentith MK3 I have a Transparent Gen 5 PowerIsolator which has LAN isolation in/outs Should the connection be 

MODEM > P’Isolator > Ph’NET > Zenith 
or 
MODEM > Ph’NET > P’Isolator > Zenith

cantorgale