I have the same computer, and a similar problem. Mine doesn't reboot
every time, and only when I misalign the connectors when trying to
connect it (touching the shells together). My guess is that this is
somehow temporarily lowering the power voltage which causes the
reboot.
Not an ideal solution, but leaving a USB extension cord plugged into
the USB connector and plugging the device into that seems to have
solved the problem for me.
>> Stay informed about: USB & reboot