Likely to be hydraulic. Very easy to locate, when standing facing the engine look to the right hand side (car battery side) and look down into the corner, you will see a black cap with yellow steering wheel logo. Your power steering should be a nice clear red colour.

 

Thanks for the reply, I looked there but can't seem to find it, here is a picture of the engine bay.

 

It is hydraulic with an electric pump. The reservoir is down below the near side headlight on RHD.

 

I found it, it was covered by a ballast for the HID bulbs, thanks guys.

 

2021 Renault Duster Techroad, power steering module failed around 91 000km. Have been waiting for more than a week for the replacement part. Buy a Duster if you would like to be left without a vehicle.