set up the VST Connections:
a) one stereo input ← physical IO
b) main output - not connected
c) control room on:
c1) one monitor out → physical IO
switch ASIO direct monitoring on in preferences
create a new empty project
a) create a new audio track; Input from stereo input 1a)
b) switch monitor on
adjust the control room signal level to 0.0 (double click on the fader, enter 0.0)
the hardware signal level does not correspond to the control room monitor signal level (here, it shows -0.9)
I am using a RME HDSP Digiface, latest drivers. I checked Cubase 6.5.4 and there the hardware signal level corresponds exactly to the control room monitor signal level.