If you have any Mindstorm or EV3 sensors/motors/controllers you probably noticed the phone-cable-like connectors that are used to go from accessories to controller boards. However, you can't use every-day phone jacks or cables because the little plastic clip is on the sidenot the center. No need to give up your dreams of interfacing with NXT parts, though! These jacks are just the right type to let you plug in those cables and expose the 6 wires.
The connector can be wired up to either provide or consume 5V power and I2C or digital/analog data. Could make for some fun hacking and interfacing by connecting to a Raspberry Pi or Arduino board! Check online for wiring diagrams and schematics
Comes in a pack of 10 jacks, no breakout board is provided, this is just the mechanical jack part.