Pack purchased to compensate for the reduced flow of wifi. The operation is very simple just plug the first near the box and the second near the PC and synchronize via the small button below. And that's all. Even by disconnecting it is again recognized thereafter. The flow rate is much higher than the wifi and allows me to play 1080p mkv and even 3d without stutters (which was my first goal) For info box on the ground floor and the second floor pc. Electricity redone. Differential on different branch Download debits are also nettementsupérieur. I recommend this kit a bit more expensive than the competition but the result is there. It has a small whistling s connection but adopt the two cases are synchronized. Fast delivery and smooth as always by Amazon.