National Instruments does not provide an instrument driver for the Marposs Easy Box. You might try consulting with Marposs to see if they wrote an instrument driver for communicating with their data acquisition system in LabVIEW.
Communicating with an arbitrary USB device can be accomplished using the NI-VISA driver, the same driver used for serial communication, but you must have access to the communication protocols for your specific device. You can only obtain that information from Marposs, and often this is proprietary information. If you do have this information, you can create a custom driver using the VISA Driver Development Wizard in MAX. After you have installed your device with this custom driver selected, you will be able to communicate with the device using VISA calls in LabVIEW, but you must know specifically what commands to send to the device.
More information on communicating with USB devices using NI-VISA can be found at:
http://zone.ni.com/devzone/conceptd.nsf/webmain/6792bab18242082786256dd7006b6416
Jarrod S.
National Instruments
