Why does one split have a pin missing? With the missing pin, can it still power a 3 pin fan?

The missing pin is what the motherboard uses to read the fan's speed. As it can only read one, only one header has that pin. The 4th pin is PWM. The remaining two are power and ground, which is what a 3 (or 4) pin fan runs on, so yes, it will power a 3 pin fan.

I’m sorry i wanted to know the fan splitter one has 4 pins and the other 3? Is that normal or it’s missing the pins?

That's how it's supposed to be. The 4-pin header includes a "TAC" (tachometer) signal that goes from the fan to the motherboard so it can report the fan RPM. The motherboard can only read one fan or the other, so plug the fan you want to read into the header with 4 pins. The fan on the connector with only 3 pins will still get power, ground, and the PWM control signal from the motherboard, but you won't be able to measure its RPM.

will this work for 2 fans that both have 4 pin connector?

Yes. One cable is 3 pin (slave) so the speed sensor works off the 4 pin side.

Can 3-pin fans be used with this adapter? i'm using two corsair rled fans and two that came with the 100r case.

This will allow you to use both fans, but beware, it will not allow you to adjust the fan curves at all. I used several programs including the MOBO's own settings to try and change it.

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All Black Sleeved PWM Fan Splitter Cable 1 to 2 Converter, 2 Pack

All Black Sleeved PWM Fan Splitter Cable 1 to 2 Converter, 2 Pack

Product ID: 28340445

Details

Brand
JBtek
Cable Type
Component
Compatible Devices
PC
Connector Type
Auxiliary
Special Feature
Tangle Free

📏240mm length for flexible setup

🔌Supports 2 PWM fans from 1 header

🖤All black sleeved for sleek aesthetics

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Description

🖤 Double your cooling, halve your hassle!

VALUE PACK OF TWO - Double the connectivity with two splitter cables in one package
DUAL FAN POWER BOOST - Split one PWM header to run two fans seamlessly
UNIVERSAL COMPATIBILITY - Works with both 3-pin and 4-pin PWM fan connectors for versatile use
SLEEK ALL BLACK SLEEVING - Elevate your build with premium tangle-free black sleeved cables
OPTIMIZED COOLING CONTROL - Maintain precise fan speed control from a single motherboard header

The JBtek All Black Sleeved PWM Fan Splitter Cable 1 to 2 Converter (2 Pack) offers a 240mm length, sleek black sleeved design, and supports connecting two PWM fans to a single motherboard header. Compatible with both 3-pin and 4-pin connectors, it ensures efficient cooling control while maintaining a clean, tangle-free setup. Perfect for professionals upgrading their PC cooling without sacrificing style or performance.

Specifications

ASIN	B01EF9OI0O
Best Sellers Rank	#200 in Computer Internal Components
Brand Name	JBtek
Cable Type	Component
Color	black
Compatible Devices	PC
Compatible Phone Models	iPhone
Connector Gender	Male-to-Female
Connector Type	Auxiliary
Customer Package Type	Standard Packaging
Customer Reviews	4.7 4.7 out of 5 stars (11,061)
Indoor Outdoor Usage	Indoor, Outdoor
Item Length	240 Millimeters
Item Shape	Round
Item Weight	9.07 g
Manufacturer	JBtek
Model	EL0073
Number of Items	2
Number of Pins	7
Other Special Features of the Product	Tangle Free
Part Number	EL0800
Recommended Uses For Product	Computer cooling
UPC	702679905487
Unit Count	2 Count

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B$11

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In stock

Sold byAmazon BruneiDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brunei.

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TrustScore 4.5 | 7,300+ reviews

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