You need a Kenton USB MIDI Host to provide MIDI In & Out sockets for USB MIDI keyboards and controllers which have only a USB B type socket. MIDI data received at the MIDI In socket will be sent to the USB device and MIDI data received from the USB device will be sent to the MIDI Out socket.
Please note: The attached USB MIDI device must be ‘Class Compliant’.
“If you need this facility, the Kenton MIDI USB Host offers a solution ….. this device does exactly what it says on the tin” Paul White, Sound on Sound, February 2012