Roland Music Player MT-90U
![Thumbnail of post image 044](https://m.media-amazon.com/images/I/61h7iXZcksL._AC_SX679_.jpg)
Easy-to-understand operability is maintained, and USB memory is used as an external medium. Multi-format music player th ...
みんなのUSB --- USB for Everyone ---
みんなのためにあるUSBの可能性を探ってみる --- Exploring the possibilities of USB for Everyone---