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

These cables seem to be high quality and work as expected. Note that by design one of the male connectors is 4 pin, and the other is 3 pin, so the motherboard will work with the PWM signal from one fan only. Using identical fans is recommended.

I needed a set of extenders for my dual cpu fans. They are very well made and work great. The length is just the right size. Compatible with 3 or 4 pin computer fans.

This worked for connecting my fans. Haven’t had any issues so far, all fans are running as expected.

I was hoping this splitter would let me double up my case fans, but it turned out my setup needed SATA power instead — so it didn’t work for me. That said, the build quality is solid: the sleeved cables look sleek, and the connectors feel sturdy. If your fans are compatible with standard PWM headers, this splitter would likely do the trick perfectly. For my situation, I had to go back to the drawing board, but the cable itself feels premium and well-made. Funny thought — it’s like buying a cool gym membership but realizing your local gym only has a kiddie pool; the gear is good, just not the right fit for me. ⭐ Rating: 3.5/5 ✅ Solid build quality and sleeved design ✅ Works with PWM-compatible fans ✅ Easy to route in a PC case ✅ Didn’t fit my SATA-powered setup 💡 Verdict: A reliable fan splitter if your system supports PWM headers — just double-check your fan power requirements before buying.

Worked well, tight fitting

I got these today about 15-minutes ago on my porch. It took only about 5-minutes to hook up 2 case fans to just 1 4-pin fan header. I've included a picture of the connectors. Notice that one connector is 3-pin and the other is 4-pin. I thought this was a flaw, but both fans are changing speed with the CPU load and temperature. If I were an electrical engineer I could tell you why the pins are setup that way. I'm only a computer scientist. The cables are good quality as far as I can tell. Plenty of length because your current fan cables are already long.

These are nice, braided. Inexpensive. Though I realized I didn't actually need to buy this because my Noctua fan came with a splitter. So before buying, see if you actually need it.

I used this to split a 4-pin fan header on my motherboard and connect two identical 4-pin PWM noctua fans. Worked without an issue. This cable should be used with identical fans. They can be either 4 pin or 3 pin. One of the split ends is missing the pin that reads the fan speed (RPM) ON PURPOSE. Both fans will look like one fan to your computer, and identical fans will run at the same speed. The speed they run at is based on whichever fan is connected to the end will all 4 pins. WARNING! If you still decide to use fans that are not identical, then they absolutely both need to be 4 pin, or both need to be 3 pin. 4 pin fans are controlled by PWM, and 3 pin fans are controlled by voltage. You should not mix the two. I suspect that mixing fans could really cause some damage, so just use identical fans if you're not experienced. Also, your ability to use 3 or 4 pin fans is based on your motherboard. Mine has a feature that auto detects if my fan is 3 or 4 pins. Most 4 pin connectors are backwards compatible with 3 pin. Read manuals, use common sense. Make sure that the fan header on your motherboard outputs enough current (Amps) to support the total current of your fans. The only downside for me was that this package came with two cables, but I only needed one. You might be able to chain them together for a 3 way split, but I haven't tried it. There's already a similar 3 way splitter on Amazon if you need one.

Return due to only one of it is working

Didn't end up needing these but I did use them for a bit and they worked well very simple

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Work perfectly. Quality is good. All the connected fans work without any issues.

Needed these for the amount of fans I have and it worked perfectly so I could hook them all up properly in my PC build.