Contrary to some reviews I've read, my two jacks do not whistle with continuous operation ever since I bought them. That said I am a bit disappointed with the speed from my grid. These allow me to transfer the data to 6mo / s between two computers and suddenly I found bridled with my internet connection (80mb in sync for those to whom it speaks). Too bad but good at the same time for that price it was difficult to expect more I think. Blame it on a feature not present I imagine: the error correction. I recommend these two CPL small to those in whom the rate of transfers is not an important factor.
