This page is dedicated to proprietary connectors, which should never have existed in the first place. If you are a manufacturer or designer and think about these things: STOP! Relax, don't do it. This is bad. Become open, use standards, release everything needed as open source - you will see that the community will hop on it and push your product.

- Apple iPod 30-pin
- Sony DMPORT: https://www.instructables.com/Sony-DMPORT-Hack-Making-an-Adapter-for-the-Digital/
- Sony Control-S / Control-A1 / S-Link
- Sony PlayStation PSP Serial Adapter and Vita Pinout
- Yamaha System Connector (Remote In/Out) + YDS / YBA ports ()
- Onkyo RI (Remote Interactive)
- Denon Link / Denon Link HD
- Marantz D-BUS
- Camera Hot Shoe connectors