The NXT/EV3 Breadboard adapter
This device connects to your Lego Mindstorms intelligent brick using a NXT or EV3 cable. On the other side, the kit plugs itself on a breaboard. This circuit comes fully assembled a requires no soldering. The breadboard adapter has a 82k builtin resistor to protect your NXT or EV3 brick.
The following image shows a technical description of the NXT or EV3 Breadboard adapter.