Connecting with External Devices
EN-30
■ Linking the Digital Keyboard with a Smart Device
1.
Referring to “Downloading the Smart Device 
App” (page EN-29), install the app on the smart 
device.
2.
Use a commercially available USB cable to 
connect the smart device USB port to the 
Digital Keyboard USB port.
• After connecting the smart device to the Digital 
Keyboard, use the smart device app to perform 
operations. For details about operations, refer to the 
user documentation of the app.
You can connect the Digital Keyboard to a computer and 
exchange MIDI data between them. You can record Digital 
Keyboard play using computer music software, and use the 
Digital Keyboard to play data sent to it from the computer.
■ Minimum Computer System Requirements
The following shows the minimum computer system 
requirements for sending and receiving MIDI data. Check to 
make sure that your computer complies with these 
requirements before connecting the Digital Keyboard to it.
● Supported Operating Systems
Windows 8.1*
1
Windows 10*
2
macOS (OS X / Mac OS X) 10.7, 10.8, 10.9, 10.10, 10.11, 
10.12, 10.13, 10.14, 10.15, 11.0
*1 Windows 8.1 (32-bit, 64-bit)
*2 Windows 10 (32-bit, 64-bit)
● USB Port
• Never connect the Digital Keyboard to a computer 
running an operating system that is not one of those 
above. Doing so can cause malfunction of the 
computer.
• For the latest news about supported operating systems, 
visit the website at the URL below.
https://support.casio.com/global/en/emi/manual/CT-S190/
■ Connecting to a Computer
• Incorrect connections can make data exchange 
impossible. Be sure to follow the steps of the 
procedure below.
1.
Turn off the Digital Keyboard and then start up 
your computer.
• Do not start up the music software on your computer 
yet!
2.
Use a commercially available USB cable to 
connect the Digital Keyboard to your 
computer.
• Use a USB 2.0 or 1.1 A-MicroB connector type USB 
cable that supports data communication.
3.
Turn on the Digital Keyboard.
• If this is the first time you are connecting, the driver 
required to transfer data will automatically be installed 
on your computer.
4.
Start up commercially available music software 
on your computer.
5.
Use the settings of your computer’s 
commercially available music software to 
select “CASIO USB-MIDI” as the MIDI device.
• For information about how to select the MIDI device, 
refer to the user documentation that comes with the 
music software you are using.
• Be sure to turn on the Digital Keyboard before starting 
up your computer’s music software.
• Data send/receive cannot be performed while a song is 
playing (page EN-15).
Connecting to a computer and 
Using MIDI
Micro-B connector
Digital Keyboard USB port (Micro-B)
Smart Device