The Discover keyboard is one of the simplist midi devices I have ever come accross.
Installation was as simple as removing it from the box and plugging it in. Drivers were installed automatically, and using it was simply a case of selecting the "ION Keyboard" entry in my chosen music program.
The keyboard itself is surprisingly robust, and the 25 velocity-sensitive keys actually feel weighty enough to play. The keys themselves are very small, as expected for such a dinky keyboard, but large enough to remain playable even with my chunky-sized hands.
Best of all, and most surprising of all for me, was that there is practically no lag with this keyboard, as has been a problem with other MIDI-USB devices I have used.
Overall, a fantastic item to have at your computer desk - takes up very little space, and is always ready for a bout of creativity. I've even begun to use this whilst onstage, using it to control a lighting system, and have found no problems with it. Highly reccomended.