Can not find the USB port .

[DavidLee]

There 2 USB ports in my PC , my OS is windows 2000. Now I want to program a application with CVI 7 ,which can read data saved in the U-disk ,the method is using VISA , but whatever I can not locate the USB port ,when using the MAX to find them , it just can locate the COM and parellel port ,how to resolve the problem ? Thanks.

David

[Dan_Mondrik]

One thing worth noting is that NI-VISA can't access your normal USB devices that already have Windows drivers. NI-VISA is either the sole driver for a given device, or it can't access it at all. So you can't use it to find or access or send commands to random devices.

We do have an article that might help:
http://zone.ni.com/devzone/conceptd.nsf/webmain/6792BAB18242082786256DD7006B6416?opendocument

Dan Mondrik
National Instruments