Will this work for adapting a molex fan cable to a modern motherboard fan header?

No. Even if you could physically force the floppy power connector onto a fan header, the pinout is not compatible. The power and ground sources are on different pins.

6 pin molex 5.25 female 4 pin video power card cable ?

No it’s not for a video card. The small connector is for the old floppy disk .100 connector.

Can the 4-pin also be pluged into a 4-pin fan header?

I do not believe the connector will mate up with the fan header. also, the opposite end is a molex male connector so I dint think the fan control will have enough amperage to run anything other than a fan. unless you were to cut off the end and attach it to something else that was extremely low amperage.

Can I use this adapter for my PC molex fans and thus be able to control them from the motherboard? at least the rgb?

No. The small end of this cable is for floppy power, which is not wired the same as a fan header on a motherboard. The +5v/+12v power sources are on different pins.

KENTEK 6 Inch 6" 4 Pin Molex 5.25 Male to 4 Pin 3.5 Floppy Drive FDD Female M/F IDE DC Internal Computer PC Power Cable Adapter Cord

Product ID: 97721552

Details

Brand
KENTEK
Connector Type
4 Pin Molex
Cable Type
Molex Floppy
Compatible Devices
PC
Recommended Uses For Product
connecting and

⚡Molex 4 pin

💻Floppy 4 pin

🔌6" length

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฿869

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
KENTEK
Connector Type
4 Pin Molex
Cable Type
Molex Floppy

Description

🔗 Power Up Your Legacy!

COMPACT DESIGN - 6-inch length for efficient cable management.
DURABLE CONSTRUCTION - Built to last, ensuring reliable power delivery.
SEAMLESS CONNECTIVITY - Easily connect your PC's power supply to floppy drives.
VERSATILE COMPATIBILITY - Perfect for retro builds and legacy systems.
HIGH STANDARDS COMPLIANCE - Manufactured under UL, CSA, and ISO 9001:2000 standards.

The KENTEK 6 Inch 4 Pin Molex to 4 Pin Floppy Drive Adapter is a reliable solution for connecting your PC's power supply to floppy drives. With a compact 6-inch design and compliance with high manufacturing standards, this adapter is perfect for retro computing enthusiasts and legacy system builders.

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