I'm taking off one star because it's not class-compliant (i.e., you need to install drivers before it'll work)

The latest 10.9 driver available on their site doesn't work with 10.10 (I tried), but I figured I'd give it a shot.3 stars (in the middle (i.e.: neutral review) because I can't evaluate it with my Mac at all at this time

However while installing the driver, no progress bars came up, led light flashed on/off once in awhile, but I gave up after 1/2 hour & ended up downloading 64 bit Win 8.1 drivers off Roland site

By the looks of their download page [...], it doesn't look like they update drivers at all for incremental updates

Running 10.9 (Yosemite) and Roland's recommended driver I could not get the USB power to work

device should have worked painlessly, but Roland has not yet updated drivers to work with Mac OS 10.10 at all

Windows 10 simple automatically find the correct driver by itself.

This one comes with the appropriate drivers to do what it needs to do.

The latest 10.9 driver available on their site doesn't work with 10.10 (I tried), but I figured I'd give it a shot.3 stars (in the middle (i.e.: neutral review) because I can't evaluate it with my Mac at all at this time

Looks like Roland released the 10.8 driver on 2012-07-26, but as of this writing, it hasn't been updated for Apple's latest incremental update (10.8.2)

Once the correct driver was installed worked great.

Once the correct driver was installed worked great.

due to Microsofts crappy MIDI driver.

Windows 10 supplied the correct driver automatically as soon as I connected the MIDI interface to my

Excellent driver.