"Plug and Play monitor" is a monitor that Windows was able to automatically detect the refresh rates and resolution for, but either monitor does not support device IDs to provide the name of the monitor, or it transmitted them incorrectly.
I just checked my graphics card (i have the same 1) and yes, pixel shader 2.0 is supported. For some reason though, I have a game that I'm trying to play that says "failed to compile and create pixel...