DELL XPS 13 right USB power

i'm just bougth a dell XPS 13 (9350) i7-6560U,

i use this computer for running VMware.

my VMware file are on a external ssd,

each time i connect my external SSD on the left side and start my vitual machine, no problem.

when i connect my SSD on the rigtht side, my virtual machine start but after a time (small) i loose the connection with the ssd.

i need to can run SSd on each usb side.

do you have a solution for solve my trouble?

thank