How to STOP the device communicating with Calibre?

I am looking forward for an option which allows me to stop the device communicating with Calibre.

Thing is that sometimes I just connect to upload a few books on to the device but Calibre first starts off with populating a book list from the device which takes 10-11 minutes, in my case. Is there any way to just upload the books through Calibre without it reading the book list on my device?

Thanks!