What Cable Use to Connect RVR to PI?

I have pi 3, and it says I need to power pi with usb and connect rvr. What cable should I use to connect rvr and pi?

Unfortunately the Pi 3 can’t communicate with Sphero over USB, so you’l need both a USB-A to micro USB cable between the RVR and the Pi for power as well as plain old jumper wire from the RVR’s UART port to the correct pins on the Pi:

Thanks! Actually it would have been awesome if RVR could communicate
with pi through usb.

We would have liked to do it that way, but the Pi actually doesn’t have a USB data connection through the micro USB port. If you take a look at the board you can see that there aren’t any traces going to the 3 middle pads on the connector footprint.