yea great but now my 2014 Mac book pro is useless ! apple don’t update that age any further than os11 , latest engine software requires os12 !, my prime has automatically updated and now my MacBook won’t update engine, so usb automatically updated when they was inserted in prime 4 , then when I put them in my Mac book not recognised by engine software , had to format usb , re load up playlists , insert in prime 4 , update usb , same again every time I want to change playlist , very angry ha ha