what is molex
Often refers to the 4-pin connectors used to attach DC power to the drives inside a PC cabinet. Molex is a large manufacturer of electronics plugs and sockets that dates back to the 1940s. Since it was one of the first companies to make these connectors, the Molex name has stuck, even though they are also made by others. These Molex connectors bring DC power to the drives inside a PC case.