urio(4) USB driver for the Rio MP3 players


To compile this driver into the kernel, place the following line in your kernel configuration file:
device urio

Alternatively, to load the driver as a module at boot time, place the following line in loader.conf5:



The driver provides support for Rio MP3 players from Diamond MultiMedia which attaches to the USB port. The device must be configured in the kernel, along with usb and one of the uhci or ohci controllers.

Subsequently, the /dev/urio0 device can be used by the Rio userland applications.


The following devices are supported by the driver:

  • Diamond MultiMedia Rio 500
  • Diamond MultiMedia Rio 600
  • Diamond MultiMedia Rio 800


blocking device node


The following line in the kernel configuration file adds the driver to the kernel:
device urio

To download a song over the USB connection into the Rio using the rio_add_song1 utility (see the Sx SEE ALSO section):

rio_add_song /usr/local/MP3/TracyChapman/02-Fast-Car.mp3


An -nosplit The driver was written by An Iwasa Kazmi Aq [email protected] for Fx .

This manual page was written by An Dirk-Willem van Gulik Aq [email protected] .