I just received my Primo HD and connected it to IDA-8 via the E4 usb-like port.
It works great, but it seems that the E4 port powers up the Primo only when IDA is on, and the startup procedure of Primo takes a while. So after I turn on the IDA I have to wait until Primo boots.
Is there any way I could achieve having the Primo always on, and still connected to the E4 port? I have a CD transport and TV hooked up to coaxial and optical inputs, so having the E4 port available for streaming is ideal for me.