I have a mac mini running roon server, files on external hard drive, roon database and os on SSD with a microrendu.
The setup is straight forward, plug the cat5 connection into your router / network, usb output to your dac and you tell the roon server that the microrendu is the output device.
Full info here:-
http://www.sonore.us/microRendu.html The device can also be set up using other protocols, I have had mine for a short while and I am delighted with it, hasn't missed a beat.
I have in the past used a Naim NDS setup and Aurender S10, I would have to say this little box of tricks gives them a hell of a run for their money.
In the UK they are just over £600.00 if you live in the US they are around $600.00 which makes them a real bargin.
I was a bit sceptical as there is a bit of hype surrounding these but I am not aware of another device that can have such an impact at this price point.
For the record I would consider myself a voracious consumer of audio equipment!
Matthew Lewis