These data boosters are similar to F Amps and will help with any long runs that you have. As the distance from controller to pixel increases the data signal becomes more week. These will help boost that data signal so you can reach your props that aren't close to your controller.
The male end is the input and the Female end is the output of the data booster.
Some other similar names that these go by are null pixels, F Amps, and boosters.
Voltage input: 5v-24v
Connector: xConnect or Ray Wu