Hi Kabul this is my problem. The NI-USB-6501 appears in Measurement and Automation Explorer as a usb device. Even through control panel and going to system and device manager it shows up. The NI-USB-6501 does not show in the physical tab when I double click on a DAQ then click Acquire Signal> Digital Input > Line Input, nothing shows up on the physical tab. I have tried this on two PC's.
Regards,