Installing the dedicated driver – Roland A-49 - MIDI Keyboard Controller (White) User Manual
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Note
Do not connect the A-49 to the computer until you are directed to do so.
You must install the USB driver when connecting the A-49 to your computer. Download the
USB driver from the Roland website. For details, refer to Readme.htm which is included in the
download.
http://www.roland.com/support
Installing the Dedicated Driver