If the device is modern enough to support NSD you can use the NSCMD_DEVICEQUERY command to find out its type.
Most devices don't support this, though, so you are actually lost in identifiying the device type. The only hint is that disk-based SANA2 devices must be in Devs:Networks.
You could maintain a white list or a black list of devices which are or aren't SANA2.
But it's probably best to point the requester to Devs:Networks and then trust the user to identify a network driver and not something else.
