MacBook doesn't see usb drive
Hi everyone, last week I bought a usb-c drive, a Kingston DataTraveler Micro Duo 3g. My MacBook (2015, 12 inch) simply doesn't see it, like if I haven't plugged anything. After restarting the computer, it works fine, but if I unplug it and plug again, after several minutes, I have the same problem. The drive is formatted with Master Boot Record partition scheme and exFat as file system.
Thanks everyone in advance for the help.
MacBook, OS X El Capitan (10.11.4)