8W-PWM-SPL-ST 8 Way PWM Splitter-Sata

A step above a Y splitter. I wasn't completely happy with my last set of splitters because they had the tendency to slip out of the plugs while affixing wire ties, so I thought I'd give this a try.It works great and can be mounted within the distance of the fan header you wish to use for monitoring and control. There are a few caveats you should be aware of, which I learned by trial and error.The two first chassis headers I tried resulted in full speed only even though I could get controlled speeds on the same headers using a normal Y splitter. That was a bit confusing as I thought all the headers on my asus m5a99fx pro r2.0 were PWM capable. Finally, I was able to get speed control using the OPT CPU fan header. Thus, it appears of the 5 headers on the M5A99FX Pro 2 Motherboard only the CPU and OPT CPU headers works for this product - unless there's a way to reconfigure the other headers that I have not found.Another caveat is I lose about 100-200 RPM's on my fans when set at full speed, not a big deal for me but just FYI. The identical fans connected to the same header as stand alone or split with a Y cable report higher RPM's then they do when connected to this fan hub. Now, I can't say whether it's actually lower RPM's or whether it's just being reported that way as I don't have another way to measure actual RPM's.The mounting screws are nice, but I did not use. The double sided tape is nearly useless because it is too thin to fill the void of the uneven surfaces between the plastic product base and the surface you wish to mount it to. I recommend  Scotch Outdoor Mounting Tape, 1-inch x 60-inches, Gray, 1-Roll (411P)  and it works great. Strong enough to hold, yet you can still pry it off carefully with a little effort - I used it to mount a fan too - no problem.The limitation of mounting is the distance from the header, so that I could accommodate 3 fans on two sides of my case I mounted it on the backside of the motherboard tray which works perfect, plus I can add any other case fans I wish to add later being near the case center.

I bought this so I could add case fans to a system that had none (and no ports for them on the motherboard). I had some initial reservations about buying this since I would have to tie into the CPU fan, thinking it might cause issues with the BIOS not being able to sense the fan RPM or issues driving the PWM signal to all the fans. When I received it, I gave it a close look and was happy to find it has separate drivers for each output fed from the PWM signal from the motherboard and the fans are powered via the separate power connector instead of pulling from the motherboard. Additionally, as was stated in the specs, the first connector (red cap, #1) has its RPM line passed through so the BIOS was able to determine the CPU fan's speed. Since I had to tap the CPU fan port to hook in the case fans, all of the fans ramp up together when the CPU is under heavy load, which ended up being more effective (and quiet, overall) than I thought it would be. The cables were plenty long (I don't recall exact length but the base unit is about 2-2.5 inches long by comparison in the photos) and the connectors mated snugly all around. It also came with some double-sided foam tape and small screws for mounting, which made things easy.Overall, I was very pleased by the design and construction quality of this fan splitter and wouldn't hesitate to buy another if needed.

This item was perfect for my application. Currently, I am building a mini itx PC utilizing a Fractal Nod304 case which contains three fans and there are only two fan headers on the motherboard itself. By utilizing this PWM splitter, it allows me to plug in all three fans and gave me lots of headroom in the future. On top, the screw holes on this splitter also allows me to screw it direction onto my case out of the way for a nice clean finish. (Behind the splitter does include a double sided tape adhesive so you have multiple mounting options.) I love the sata power connector which allows me to use the existing line from my PSU. No additional messy bulky molex for me! The wiring length is adequate, not too long or too short (for a mini itx case) but I do wish that they came sleeved. I can't say much about the build quality, it's plastic and smooth. However, my only complaint is that the connections for all the fans could be better. It does not stay on as firmly as I would like, even the connection going to the motherboard. Overall, it is a great reasonably priced product and works well with my application.

Swiftech PWM splitter/controller - worked better than expected. I have a ASUS Motherboard with two CPU headers and 4 aux fan headers. Never had the level of control on the aux fan header. After installation of the controller, my control was much better, and was able to reduce the RPM to a lower level than allowed with aux fan headers. Also at higher RPM's the fans made less noise. I believe the small differences between CPU and Aux headers in speed (RPM) caused harmonics that made the fans louder at higher speeds. Benefits of this product: My noise was reduce at higher speeds, controlled all the fans better, have a lower RPM control (400-1500RPM), and dropped my desktop build average 2.1 degrees. I will use this product in each of my future builds. I use the ASUS fan control software to and custom fan/temp curve to control my fans. Swifttech is plugged in to the CPU1 fan header.

Bought two!One never worked at all. Replaced it with the silverstone alternative and that works well.Second one works well.