Molex 4-pin Power connector, generated image
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Size4-pin
SignalDC power
Pins4

Molex

Molex 4-pin Power
Invented in
1960s
Invented by
Molex Inc.
Availability
Common (PC)

The white nylon 4-pin connector that delivered power to drives and fans inside PCs for generations. Two voltages (5 V and 12 V) in one chunky plug.

Technical specifications
Introduced1960s
SignalDC power
Voltages+5 V / +12 V
Pins4
Recommended brands
01DeLOCK
02StarTech
03Akasa
Where to buy
Europe-focused retailer searches. Some links are affiliate links and may earn a commission.
Common adapters and cables
Molex to SATA power adapter
ATX to Molex adapter
Power an accessory from a modular PSU.
Fun fact

"Molex" is actually the company name, the connector became so ubiquitous that the brand turned into the noun.

Tips & tricks

Rock it gently side to side, not straight out, pulling hard can unseat the pins.

Philosophy

Stiff, satisfying and slightly scary to unplug, the Molex is the inside-the-PC handshake a whole generation of builders knows by feel.

Applications
PowerData