Greetings,
The AT-MIO-16X board was last supported in version 6.1 of the NI-DAQ driver. Therefore, you must use version 6.1 or earlier with this hardware. Additionally, version 6.1 is only supported by Windows NT 4 and Windows 95.
The AT-AO-10 is supported by version of NI-DAQ ranging from 4.6.1 all the way up to 6.9.3. In order to use both boards in the same computer you should use version 6.1 of the driver.
Regards,
Justin Britten
Applications Engineer
National Instruments