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How It Works3 min read

How to Connect a Casio Keyboard for Online Practice

CDP, PX, CT-S series — USB or Bluetooth, both routes covered, no driver install needed.

Casio's USB-equipped keyboards work seamlessly with Super Simple Piano in Chrome, Edge, or Opera. No driver install, no bridge app. Here's the setup for the most common Casio lines.

USB MIDI (CDP, PX, CT-S series)

Almost every Casio with a USB-to-host port (CDP-S160, PX-S1100, CT-S400, CT-S1, etc.) is class-compliant. That means it works the moment you plug it in.

  • USB-A to USB-B cable
  • USB-B end → piano, USB-A end → laptop
  • Open the player in Chrome, Edge, or Opera
  • Click **Allow** on the MIDI permission prompt
    • MIDI permission prompt
    MIDI permission prompt

    The MIDI pill appears in the floating panel:

    Performance mode with MIDI connected
    Performance mode with MIDI connected

    Bluetooth MIDI (PX-S3100, PX-S5000, CT-S1, CT-S400 + WU-BT10)

    Newer Privia and CT-S models have built-in BLE MIDI. The CT-S400 supports it via the WU-BT10 wireless adapter sold separately by Casio.

    Tap the Bluetooth button in the floating panel and pick your piano:

    Older Casio without USB or BT

    Older keyboards (LK-S series, CTK arrangers) don't have a digital MIDI port. Use mic mode — tap the 🎤 Mic button and we'll listen through your microphone.

    Mic mode connected
    Mic mode connected

    Troubleshooting

  • Pill doesn't appear — refresh the page once after plugging in
  • Wrong USB cable — make sure it's a data cable; some "charge only" cables look identical but won't carry MIDI
  • iPhone / iPad — Apple blocks Web MIDI; use mic mode instead

    • ---

    Plug in, click Allow, and play. Browse songs or read the full real-piano setup.

    Ready to start playing?

    Put what you've learned into practice with thousands of simplified songs.

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