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.

Molex has shrunk its Fit family of wire-to-PCB connectors – to 3.5mm pin-pitch to produce the Ultra-Fit range – the size of the one pictured, looking straight into the pins, is 10 x 14mm. For single ...

On page 4, there is an "IDE Power" connector. It looks a lot like a 4 pin CPU fan connector, but it (obviously) provides different voltages that are appropriate for 3.5" IDE drives (5V, 12V) and ...

Molex has announced two families of FFC/FPC connectors designed to add high-reliability to small-pitch. Dubbed Easy-On FFC/FPC connectors they are available in 0.5mm pitch and 1.0mm pitch formats.