Hi Salu,
So, no problem friend. Enjoy!
USB 3.1: architecture maintains USB 2.0.
USB 3.1: will have backward compatibility with USB 2.0.
Your pendrive 3.0: in USB 3.1, will have speed USB 3.0.
Your pendrive 3.0: in USB 2.0, will have speed USB 2.0.
Regards, Alfred.