Unzip the file and enter the newly-created directory. Save the downloadable package on an accessible location (such as your desktop). To install this package please do the following: Even though other OSes might be compatible as well, we do not recommend applying this release on platforms other than the ones specified. If it has been installed, updating (overwrite-installing) may fix problems, add new functions, or expand existing ones. This package contains the files needed for installing the Keyboard/Piano USB MIDI driver. The newer version fixes problems caused during MIDI data playback using Running Status. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.- The newer version fixes problems during data transfer using system exclusive messages on a system where Intel Hyper-Threading Technology is enabled. IMPORTANT NOTICE THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. There are older versions of the driver available on the release page, but these are provided 'as is', as I cannot maintain these older versions easily. You should then be able to plug your keyboard with a USB cable and power it up, it will show up in the Audio & MIDI Setup utility as 'Casio USB Keyboard'.

plugin file and copy it to your /Library/Audio/MIDI Drivers folder :

While it has been compiled for both Intel and Apple Silicon (M1 and others), I cannot test if it actually works with Apple Silicon. The current version is compatible with macOS 11.0 (Big Sur) and up. The project originated on Google Code, and you can still visit its old home at: Note that this project is entirely unsupported by Casio and is simply a voluntary effort. The driver is entirely based on sample code from Apple's SDK, and should work with many models of Casio keyboards. This is the home of a non-official MIDI Driver for older, USB-only Casio keyboards that do not work out of the box on Mac OS X.

Casio keyboard driver mac