OwlTree 2 Pack USB 5V to 12V 4 Pin Fan Speed Adapter Controller Supported PC Cooling Fan, Max 12V 8W Output (11
Input USB 5 V, Output DC 5-12V,Max Output 8W, ideal for Low-power 12 V fan speed controlling
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OwlTree products
Discover the best OwlTree products
- Innovative cooling solutions for optimal performance.
- High-quality materials for lasting durability.
- Versatile compatibility for all your fan needs.
Top OwlTree products
Hand-picked items with quick links to pricing and details.
12V 4 Pin PWM Fan Speed Controller PC Fan Hub 6 Fans Supported, Powered by Type
Supports 6pcs 4 Pin PWM Fans (Fans not included, Not compatible with 3-pin/2-pin fans)
Multi
Compatible with most square frame 120 and 140mm PC Fans
OwlTree 4 Pack Thermal Pad,100x100mm 0
Excellent thermal conductivity: Made of thermal silica gel with heat conductivity of 6.0 W/mK
4Pack 4 Pin to 3
4 Pin to 3 Pin RGB Adapter: the 4Pin is for Corsair RGB HUB, Lighting Node CORE, Commander CORE and iCUE Commander CORE XT ONLY
4 Pin 12V PWM Fan
Supports 6pcs 4 Pin PWM Fans (Fans not included, Not compatible with 3-pin/2-pin fans)
OwlTree GPU Support Bracket Graphics Card Stand Holder GPU Sag Bracket Supprt Fans 12cm and 14cm Fans (0
The GPU Support bracket features an all-metal material (non-plastic) for enhanced rigidity, stability and long-term durability.
PC Power Button, Desktop Switch
External Desktop PC Power Button – Ideal for home use, computer labs, barebone systems, and custom chassis builds. If your PC case is placed in a hard-to-reach location, this extension switch allows you to relocate the power button for easy access and convenient operation.
OwlTree Remote PC Power Switch,
Remote PC Power Switch – Ideal for home users, server rooms, barebone PCs, and custom water-cooled builds. If your PC case is placed in a hard-to-reach location (e.g., under a desk, inside a cabinet, or mounted in a confined space), this switch allows you to relocate the power button to a more accessible spot for convenient operation.
OwlTree M
M.2 NVMe to OCuLink Adapter: the SFF-8612 to NVMe riser card allows you expand an OCuLink SF-8611 4i Host via M.2 PCIe NVMe Socket, to connect eGPU or U.2 U.3 SSD,It comes with 15cm FPC Circuit Board
OwlTree GPU Support Bracket Graphics Card Stand Holder GPU Sag Bracket Supprts 12cm and 14cm Fan 0
The GPU Support bracket features an all-metal construction (non-plastic) for enhanced rigidity, stability and long-term durability.
4 Pin 12V PWM Fan Controller with Type C USB Power Cable and 4Pin 5 Way PWM Fan Splitter Hub,PWM Fan Speed Controller with 15
Wide compatibility: compatible with most of the USB fan/ pump speed, can also be applied to routers / small host / soft routing and other DIY cooling,comes with a 4 pin 5 way fan hub, you can use many fans a the the same time. Speed adjustment range: PWM duty cycle 0-100%.
OwlTree Pcie 4
Compatible with all of the PCI-E Device and Graphics Cards: Includes the new RTX series such as RTX4090, RTX4070ti, RTX3090ti, RTX3090 , and MORE. 🔺it is 90 Degree 200mm/7.8inch, Please check the length and angle you need before purchasing!🔺
PC Power Switch Splitter, 2 Pin 2
High Quality PC Power Switch Splitter: Made of standard 24AWG tinned copper wire, has a long service life.
OwlTree 2 Pack Motherboard USB 2
USB2.0 9Pin Header Splitter: the USB2.0 1 to 2 splitter can solve the lack of your interface USB ports of your motherboard. Convert a USB2.0 9 Pin on motherboard to dual 9Pin ports.
PCIe 4
Package Include: OCuLink SFF-8612 Female to PCIe x16 Enclosure Dock, and SFF-8611 Male to Male Cable 50cm/19.7inch (Note: The GPU and Power Supply are not included)
PCIE 3
Compatible graphics cards: Any GPU with available drivers on the official NVIDIA or AMD websites can be used. For NVIDIA, this ranges from the top-end RTX 5090 all the way down to the GTX 450. The same applies to AMD graphics cards. (Do not recommend Graphics Cards with Intel)
PCIe 4
Compatible with OCuLink eGPU: supports external OCuLink SFF-8612 SFF-8611 device and supports convert to SFF-8639 U.2 SSD
PC Power Button, Desktop Power
External Desktop PC Power Switch: It is recommended for home users, computer rooms, bare board machines, water-cooled chassis DIY, etc. If the case is placed in a hard-to-reach place, use this switch to lead to a place where it is convenient to operate.
OwlTree 2 Pack EPS12V CPU 8 Pin Female to CPU ATX 8 Pin and ATX 4 Pin Male Power Supply Extension Cable EPS 12V for Motherboard 10
Compatible: work with motherboard with ATX 4 pin, 8 pin or 8+4 pin ports
OwlTree 3 Pack Thermal Pads, 100x100mm, 0
Excellent thermal conductivity: Made of thermal grease with heat conductivity of 12.8 W/mK, better a lot than normal thermal pads
OwlTree 2 Pack Motherboard USB 2
USB2.0 9Pin Header Splitter: the USB2.0 1 to 2 splitter can solve the lack of your interface USB ports of your motherboard. Convert a USB2.0 9 Pin on motherboard to dual 9Pin ports.
OwlTree Thermal Paste Remover Kits
【Good Perfermance】they can efficiently wipe out residue of old thermal compound on heatsink as well as the heat-spreader of CPUs, GPUs or other chips
GPU Support Bracket, GPU Sag Graphics Card Anti Sag Bracket Aluminum Magnet GPU Support Stand 0
All-aluminum metal material: the GPU support is made of all-aluminum metal instead of plastic, can avoid the aging of plastic materials and can be used as a long-term replacement.
OwlTree PCIe 5
Package Include: NVME M.2 Female to PCIe x16 Enclosure Dock 30cm/11.8inch (Note: The GPU and Power Supply are not included)
OwlTree 2Pack 4 Pin to SATA Female Hard Drive Power Adapter Cable Compatible with Hikvision Video Recorder 7
4Pin to SATA: 4 pin port connects to Hikvision video recorder ( Only works with Hikvision video recorder as listed. ), SATA port connects to hard drive
Computer PC Power Button, Desktop Power Button PC External Power Button with 4 Port USB 3
PC Power Switch with USB 3.0 Hub: A compact multi-function switch combining PC power ON/OFF and high-speed USB 3.0 hub, perfect for office, home, and industrial use
PCIE 4
Compatible with all of the PCI-E Device and Graphics Cards: Includes the new RTX series such as RTX4090, RTX4070ti, RTX3090ti, RTX3090 , and MORE.
Multi
Compatible with most square frame 120mm PC Fans (Not for 140mm fans)
About OwlTree
A short background and what makes this brand stand out.
At OwlTree, we prioritize quality, performance, and user satisfaction in every product we offer. Our solutions are designed for efficiency and versatility, ensuring that you can optimize your cooling systems and enhance your PC's performance with ease. With a commitment to reliable technology and customer-focused innovation, OwlTree stands out as a trusted choice for tech enthusiasts.
Our product range includes the OwlTree 2 Pack USB 5V to 12V 4 Pin Fan Speed Adapter Controllers for PC cooling fans, capable of delivering a maximum output of 12V and 8W. We also offer the OwlTree 4 Pin PWM Fan Controller Hub that supports up to 6 fans and provides convenient PWM fan control with Type-C PD3.0 QC 3.0 and DC 5521 compatibility. Additionally, our Multi-Purpose Desk Fan Stand Mount is perfect for accommodating 120mm and 140mm PC fans. For thermal management, the OwlTree Thermal Pad collection includes high-conductivity pads for laptops and GPUs, while our RGB adapters ensure seamless connectivity with multiple RGB hubs. OwlTree also continues to expand its lineup of PC cooling products, accessories, and other innovative PC parts designed for modern computer builds.
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Key specs at a glance.
| Feature | OwlTree 2 Pack USB 5V to 12V Fan Speed Adapter | 12V 4 Pin PWM Fan Speed Controller | Multi-Purpose Desk Fan Stand Mount | OwlTree 4 Pack Thermal Pad | 4Pack 4 Pin to 3 Pin RGB Adapter | 4 Pin 12V PWM Fan Controller | OwlTree GPU Support Bracket | PC Power Button, Desktop Switch Splitter |
|---|---|---|---|---|---|---|---|---|
| Input Voltage | USB 5V | Type-C 12V & DC 5.5×2.1mm | N/A | N/A | N/A | SATA 12V & DC 5.5×2.5mm | N/A | N/A |
| Output Voltage | DC 5-12V | DC 12V | N/A | N/A | N/A | DC 12V | N/A | N/A |
| Max Output | 8W | 60W | N/A | 6.0 W/mK | N/A | 60W | N/A | N/A |
| Compatible Fans | 4Pin 12V Fan | 6 pcs 4 Pin PWM Fans | 120mm/140mm Fans | N/A | 5V 3 Pin Devices | 6 pcs 4 Pin PWM Fans | 120mm/140mm Fans | N/A |
| Adjustable Speed | Yes (Dial) | Yes (PWM Duty Cycle) | N/A | N/A | N/A | Yes (1%-99%) | N/A | N/A |
| Material | 24AWG Tinned Copper Wire | N/A | Heavy-duty Metal | Thermal Silica Gel | N/A | N/A | All-Metal | N/A |
| Package Includes | 2 pcs Fan Speed Controller | Controller ONLY | Desk Stand | 4 Thermal Pads | 4 PCS Adapters | Controller ONLY | GPU Support Bracket | Power Switch & Cables |
| Installation | Easy (Plug & Play) | N/A | Tool-free | N/A | N/A | N/A | Easy Installation | Easy Sticker Installation |
| Buy | Check price | Check price | Check price | Check price | Check price | Check price | Check price | Check price |
In-depth details
Helpful context, usage notes, and comparisons.
Key Features and Benefits
The OwlTree Fan Controller and USB 5V to 12V 4 Pin Fan Speed Adapter are designed for convenient and reliable PWM fan control in desktop PC cooling systems. With a maximum output of 8W, this solution efficiently supports low-power 12V fans, making it an excellent choice for users looking for an OwlTree fan control solution or a dependable PC fan controller card alternative for improving airflow and thermal efficiency.
Constructed with 24AWG tinned copper wire, this adapter offers excellent resistance to corrosion and oxidation, enhancing durability and lifespan. Its user-friendly design allows for easy setup—simply plug the USB into an adapter or computer, connect the 4-pin end to the fan, and adjust the speed using the dial for customized cooling.
Brand Advantages
OwlTree provides practical cooling solutions through its range of fan controllers, thermal accessories, and PC components. The OwlTree 4 Pin PWM Fan Controller makes it easy to power and regulate multiple cooling fans while maintaining compatibility with standard 4-pin PWM devices. Users building or upgrading desktop systems appreciate the simple installation process and dependable performance that OwlTree products deliver. The compact 11.8-inch adapter helps reduce cable clutter while providing stable 12V output for compatible fans. Combined with other OwlTree PC parts, the controller supports efficient cooling for gaming PCs, workstations, and custom computer builds.
Comparison with Alternatives and Application Recommendations
Compared with many traditional fan controllers that require additional power connections or complicated wiring, the OwlTree USB 5V to 12V Fan Speed Adapter Controller offers a straightforward plug-and-play experience. Its compatibility with standard 4-pin PWM fans makes it suitable for a wide range of cooling applications.
For users searching for an OwlTree fan controller, OwlTree fan control PWM, or a reliable replacement fan controller PC solution, this adapter provides an effective combination of ease of use, durability, and consistent cooling performance. It is also a practical companion for systems using OwlTree thermal pads to maximize overall thermal management.
What customers say
A few example reviews to set expectations.
These OwlTree fan speed adapters are fantastic! They easily converted my standard 5V power to 12V, providing excellent cooling for my PC fans. The 11.8-inch length is just right for tidy cable management, and the performance has been reliable. I've noticed a significant improvement in airflow, making my setup much quieter and more efficient. Highly recommend for anyone looking to enhance their cooling solution!
2026-03-30
These OwlTree fan speed adapters are a game changer for my PC cooling setup. The 5V to 12V conversion works perfectly, providing the necessary power without overheating. The build quality is solid, and the 11.8-inch cable length offers great flexibility for installation. My fans run quieter and more efficiently now. Highly recommend for anyone looking to enhance their cooling system!
2026-03-23
The OwlTree USB fan speed controller is a solid product that effectively powers PC cooling fans with adjustable speed. The 11.8-inch length is convenient, but I found the cables a bit pesky to manage. Additionally, while it performs well, it could benefit from clearer instructions for first-time users. Overall, it does the job efficiently and is a great value for enhancing cooling performance.
2026-03-16
These OwlTree fan speed adapters are fantastic! They easily converted my 5V fans to 12V, providing a significant boost in performance. The installation was straightforward, and the 11.8-inch length was perfect for my setup. I appreciate the solid build quality and reliability. My PC cooling has never been better, and I highly recommend these adapters for anyone looking to enhance their fan capabilities without complications. Great value for the price!
2026-03-09
The OwlTree USB to 12V fan speed adapter works well for PC cooling, providing a solid boost in fan performance. The cable length is convenient, but the build quality feels slightly cheap and could be improved. Despite these minor drawbacks, it effectively regulates fan speed and supports a decent output, making it a worthwhile addition for enhancing cooling solutions. Overall, a reliable product for PC enthusiasts.
2026-03-02
Frequently Asked Questions
Quick answers to common questions.
What makes OwlTree's fan speed controllers suitable for PC cooling solutions?
OwlTree's fan speed controllers are designed with advanced features that support precise fan speed adjustments, ensuring optimal cooling performance for your PC. With a maximum output of 60W and support for multiple fans, they help manage airflow effectively, keeping your system cool during intense tasks.
Are the thermal pads from OwlTree compatible with various components?
Yes, OwlTree's thermal pads offer excellent versatility and can be used with a variety of components including laptops, CPUs, GPUs, SSDs, and LEDs. Their high thermal conductivity of 6.0 W/mK ensures efficient heat transfer, making them suitable for a wide range of applications.
Can I use OwlTree's RGB adapters with my existing Corsair RGB setup?
Absolutely! OwlTree's 4 Pin to 3 Pin RGB adapters are specifically designed to be compatible with Corsair RGB HUBs, Lighting Node CORE, and Commander CORE systems, allowing you to easily connect standard 5V 3 Pin ARGB fan devices without any issues.
What is the maximum fan size that the multi-purpose desk fan stand mount supports?
The multi-purpose desk fan stand mount from OwlTree is designed to accommodate 120mm and 140mm PC computer fans. This flexibility allows users to optimize their cooling setup based on their specific needs and preferences.
How easy is it to install the OwlTree fan speed controllers?
Installing OwlTree's fan speed controllers is user-friendly and straightforward. The controllers come with clear instructions and require no specialized tools, making it easy for both experienced users and beginners to set up and start enjoying improved cooling performance right away.