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

Worked well, tight fitting

I bought these twice. I had to use it on one build. My new mitx case somehow needed two daisy chained. I am glad that it came in a quantity of two. The quality, function, looks are solid. I seriously would buy these from this vendor over and over.

Used this to power 2x Noctua fans I added to a computer case. Good value for what you get.

I've bought a few of these and they work well, with a couple of catches:First, only one of the fans on the splitter will report its speed to the fan controller: the fan attached to the connector that has four pins instead of three. This is intentional and correct. The pin that's "missing" on the other connectors is the pin that reports the fan's speed. The controller would have no way of understanding all the fans' individual speeds if they all tried to report to the controller. Just remember that you must have a fan connected to this four-pin header on the splitter in order to read how fast that fan is spinning, and you're only really reading this one fan's speed even when you have multiple fans connected. If one or more of the other fans die and stop spinning, the fan controller cannot know. If that's a deal-breaker then what you want is a fan controller that connects to the system via USB, not a simple splitter.2. The pins on the fan side of the splitter are sometimes a bit mangled and crooked. They typically straighten out after you plug in a fan the first time, but you may have to fight that first connection a little bit. I recommend disconnecting the fan after the first time you successfully plug it into the splitter, because I've had cases where a pin didn't straighten, it just got shoved down into the body of the connector. You can typically push the pin back into position with a little fighting, or pull it back into place with some hemostats, but it's definitely a rough edge that feels like poor quality control.

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.

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.

no damage

Work just fine and would recommend them