Thank you for reply I have done my own UsbAdc11.inc and it works I have another question When i open the device for the first time and if unfortunately i try to reopen without closing it before, i cannot neither close, neither open it. The only solution i have is to stop /start my software. Is there...

I am programing Delphi 7 application using USB ADC11 product.
Previously, I use ADC11.INC. I dont find any USBADC11.INC.
Could you help me.