This table covers the older iCode Pro and Plus adapters. For the current lineup, see Compare iCode adapters.
| Feature | Uno | Uno Pro | Uno Plus | Duo | Duo Pro | Duo Plus | Duo Plus Pro | Duo BLE | Quad Pro | Quad Plus |
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| Connection | USB | USB | USB | USB | USB | USB | USB | Bluetooth | USB | USB |
| Atari Joysticks | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 4 | 4 |
| Atari 2 Button Joysticks |  |
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| Atari Paddles | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Atari Driving Controllers | |
1 | 1 | |
2 | 2 | 2 | |
4 | 4 |
| Atari Trackball | |
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| ColecoVision Joystick and Keypad | |
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| Sega Genesis 6 button Controller | |
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| Mouse Emulation | |
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| Additional Buttons | |
3 | 5 | |
3 | 6 | 9 | 5 | 3 | 6 |
| Directional Hat Switch | |
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| Programmable Buttons | |
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| Keyboard Emulation | |
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| Wireless | |
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| Mac OS Compatible | |
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| Windows, Linux, Android Compatible |
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| Paddles MiSTer Mode | |
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| Paddles Min/Max Tuning | |
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| Fire Button Remap | |
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| Paddles Full Mode Positive/Negative Axis |
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| Paddles Half Mode Positive Only Axis |
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