Are 4-pin IDE, 4-pin Floppy and Molex connectors different?

Question

Computers

I ran into this issue when choosing a PSU for a PC. In the Yandex market ( https://market.yandex.ru/product/12454108/spec?hid... ) they are listed separately in the specifications, why? And where to stick a molex fan?

Answer 1

IDE
floppy
On the fan, as a rule, a Molex pass-through and / or a connector connected to the motherboard (SYS FAN)

Answer 2

IDE=Molex. floppy another

Answer 3

Molex is usually called a connector for connecting IDE drives - a wide white block with two truncated corners for 4 wires - yellow, black, black, red. A fan without a special connector can be easily plugged into a molex, a fan with a connector is usually stuck into the mother (bonus - rotation speed control, monitoring). The flop connector is archaic, a narrow specific connector with a latch for the same 4 wires, I don’t know of popular devices that use it (once it was possible to plug magneto-optics into it). The number of connectors is a significant thing, with a small number of them (and Dishman PSUs save on everything), there will simply be nowhere to stick devices, you will have to ... with adapters-splitters.