There is a difference between who makes the cable wire part of the cable and who assembles it into patch cables. One of the better known makers of cable is belden, many people buy end cables from a company called monoprice. Be careful even monoprice sells cables that are "fake". They sell cables with wire size less than 24. This automatically makes the cable not a certified ethernet cable. You only have the companies word and warranty that it works. It likely only works at shorter distances and is still very fragile compared to cables with proper wire size.