Hello.
I use two things for my SX700. One is a very short extension cable if I am away from home. Get the one with a 45 degree end that connects to your keyboard(if you have the space to connect them else straight connect is your only options) so that you never have to take it out for carrying in a case or worry about anything bumping the connected end. And when at home I use a 4 port 3.0 USB powered hub with the ability to power up what ever USB I so desire. I use powered hub as i fire them all up at once sometimes for my own reasons. (note: follow the recommended Yamaha and forum behavior practice on how to use USBs on your keyboard, not my bad habits)
Drake has a 2.0 and that is good . I just went with the 3.0 because a 64gb needs that extra kick for me with all the files I load on my USBs. You can decide. I considered the wear and tear on my Keyboard USB connection when I bought mine because I wore out one port on my laptop. Both can be purchased from Amazon.
dom