I replaced my old cable with this one when the connectors broke. Not long after, I noticed that my download speed dropped from 600Mbps to 60Mbps. I blamed Comcast first and asked them to check my internet connection and they quickly determined that the problem was the new cable between my computer and my modem. Of course, I replaced that cable with another manufacturer's CAT 6 cable and my speed went back up to 600Mbps. Poor quality control. Bad product.