NI USB wird von LabVIEW nicht erkannt

Installiere dir eine zu LabVIEW 2012 passende Version von DAQmx (nicht die base-Version) und du wirst deutlich glücklicher sein.

Gruß, Jens

EDIT: Aus der Readme Datei zu DAQmx Base:

Zitat:Choosing Which API to Use

The following sections provide a NI-DAQmx and NI-DAQmx Base overview and include information about choosing the right API for the device and application.

NI-DAQmx

NI-DAQmx is the latest NI-DAQ driver with new VIs and functions and development tools for programming measurement devices. Install and use NI-DAQmx if the following situations apply:
You are using Windows 8/7/Vista/XP. NI-DAQmx is the recommended driver software package for these operating systems.
You are using a device supported by NI-DAQmx and a development environment supported by NI-DAQmx. Refer to the NI-DAQmx Readme for up-to-date information on supported development environments.

NI-DAQmx Base 3.7.0

Install and use NI-DAQmx Base 3.7.0 if the following situations apply:
You are using an operating system not supported by NI-DAQmx, such as Mac OS X.