Razer PWM PC Fan Controller: Connects Up to 8 Fans - Custom Fan Curve Profiles - Convenient Fan Monitoring - Thin Profile
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Features
- Connects with up to 8 Fans: Designed to provide voltage and PWM control for up to 8 fans, the Razer PWM Fan controller supports a diverse range of PC build requirements
- Custom Fan Curve Profiles: Create custom fan curve profiles via Razer Synapse and have your case fans automatically adjust their speeds based on system temperature including the ability to run at zero RPM for total silence
- Convenient Fan Monitoring: Keep track and adjust fan speeds all from a single intuitive interface with the Razer Synapse software
- Thin Profile: The Razer PWM Fan controller features a low-profile design and adhesive backing making it easy to install in tight spaces within your PC case
- Dimensions: 100 x 70 x 18.65mm
Description
Master your PC’s airflow and noise with the Razer PWM PC Fan Controller. Easily use the Razer Synapse software to unlock and customize the pulse width modulation curves for up to 8 fans and enjoy lower noise levels compared to traditional DC powered fan setup.
Color: Black
Brand: Razer
Product Dimensions: 0.73"H
Material: Copper
Item Weight: 80 Grams
Brand Name: Razer
UPC: 810056145941
Warranty Description: 2 year manufacturer
Manufacturer: Razer
Part Number: RZ34-02140700-R3M1
Model: RZ34-02140700-R3M1
Included Components: PWM PC FAN CONTROLLER
Unit Count: 1 Count
Item Type Name: PC Cooling Fans
Display Type: Software
Smart Home Compatibility: Not Smart Home Compatible
Color: Black
Material Type: Copper
Item Dimensions L x W x H: 0.73"H
Item Weight: 80 Grams
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To initiate a return, please visit our Returns Center.
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Top Amazon Reviews
I used this along with 7 Noctua fans to cool off the inside of a cabinet I built to hold my gaming pc (5800x w/240 AIO + 3090fe neither break 65c under gaming load) work laptop, small network switch and my APC. The install and configuration process is incredibly simple and works right out of the box. I mounted this externally from my PC case but it has magnets that allow it to stick to the metal of your case. The fans are mounted using AC Infinity grills. I created a couple custom fan curves, one Idle and the other for Gaming. I’m not going to take any stars away but there could be some improvements to the configuration. I’d really like to see the option to set the fans to 0 RPM. Might not be the best option for me but I can see where it would be beneficial. I’d also like to see a PWM option, that allows you to control the fans speed based on the GPU temp, currently on the CPU temp is taken into consideration. I emailed Razer’s suggestion box so it could still happen. If you’re working on a “hidden PC” or PC in a desk, this has to be on your component short list!
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Reviewed in the United States on March 20, 2022 Reviewed in the United States on March 20, 2022 by JerSwift
My fans had a short circuit and this thing saved my 1.5k pc from frying. I bought another one.
Reviewed in the United States on January 21, 2026 by Ed Gonzalez
Build quality is great and works just right with the software.
Reviewed in the United States on February 13, 2025 by JM
I have an Asus x570-I. It has a woeful amount of fan headers for a $250 board. It kind of quietly angers me. So I found this. It works but not on boot up. I have to unplug and then re-insert every fan back in the hub, wait a few seconds and then all is good. So, it frustratingly fixed an issue. It could be that I had to use an internal usb hub. I had to. The frigging motherboard only comes with one. All in all it does what it say and it’s honestly a cool gadget but it has flaws. Mileage may vary and it may well work awesome for you. But if you are having issues like me, 1) Remove back of PC cover(or wherever you have all this installed)2)unplug the fans, 3) Replug the fans 4) Presto, fully working in Razer Synapse. It’s worth the price if you need the hubs. You do get 8. If all you need is every fan running at the same speed, most modern cases give you a fan hub for free. Use that instead. This does seem to work fine with Noctua fans but it only reads one of the two 160mm Lian Li fans that came with my case, hence, the work around I found. Some fans may not work. I agree with one confirmed purchase about that not being cool. Having to purchase multiple brands of PC fans just to make sure they work with this, is fairly unacceptable. You could buy the Razer fans, but I really don’t want to.
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Reviewed in the United States on February 18, 2024 by Dirk Jewitt
I'm a razer guy, all my stuff is razer. So, I needed this for my Kunai fans and it works great. Synapse app could use some work, but the controller works just fine.
Reviewed in the United States on November 8, 2024 by Alex Pullen
I love my razer Argb hub with Snypse, this hub not so much , I have 5 identical cooler maser pwm fans and two of them showed up as can not detect fan speed , I would unplug and try different ports and they would work showing each fans RPm , then for no reason go back to , can not detect rpm ! Irritating and annoying device that doesn't have to be
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Reviewed in the United States on May 21, 2022 by Matt
Does the job decently. Although synapse app is a little annoying it gets the job done. The size the of the unit is great though and can fit most 2.5 hdd/ssd mount points. Synapse app is not all that great but works.
Reviewed in the United States on July 9, 2023 by iamsamwu
I had this controller for about a week. But I had too many little issues that kept me from keeping it, or even recommending it over a a simple fan hub. Yes, This is a controller. Not a hub. This requires a usb connection and the Razer Synapse software for it to work properly. But that was where this controller fell apart. I had fans reading in the tens of thousands of rpm's after the software was installed. But worked perfectly fine connected to the motherboard. So I am not sure of where this fault lay. Note, that it was only a few of my fans, and corsair ones oddly enough. But they others worked perfectly fine. This controller only works properly with 4 pin PWM fans. Any 3 pin will run at max velocity with no ability to control the rpm. Effective PWM fan control range is about 30%-100%. It, like the argb controller, was slow to respond to changes. The software seemed a bit laggy. The fans speeds didnt update very quickly either. The other problem, and a glaring one for me. You cannot control what the fans are controlled by. Say I want the fans controlled by the GPU, cant do that. Or have two fans controlled by the GPU, and the rest controlled by the system temperature or chassis probe. Nope. It seemed the controller did its work by CPU temps, and nothing else. I dont know if it was just my unit or not, but populating each port with a fan that could hit 2k rpms or higher, the overall hubs ability to push each fan to their max rpm seemed to diminish. Had 8 2400 rpm fans attached, and my fans were topping out at about 1800-1900 rpms. Could be a fault of them moving to a sata power connector too. I dont know. Removing one or two of those fans restored their max rpm's. This controller is extremely well built. It feels solid, not too heavy, but not light enough to deter its quality. Had mounting holes on the bottom the same size as those on a 2.5" hard disk or ssd. Also magnetic. Not a super strong magnet for obvious reasons, but it was enough that I could plop it on my chassis bracket and it stayed fast in place. Even with 8 fan wires coming off of it. The wires were a tad short, so If you have a larger case, I would invest in some extension cables. Sata power connector, and motherboard USB header connector. Other than that, this is a solid bit of kit. Looks fantastic, but is held back by mediocre software control. Hopefully they make an improved version with more finite controls. I would definitely be on board with this then.
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Reviewed in the United States on March 15, 2023 by Doculean