100% Money Back Guarantee if you are not satisfied with your 12V PC Fan Speed Controller, AC Plug Adapter with 5X 4Pin Hub | Volt Display, Compatible 2/3/4-Pin, DIY Project for Server AV Cabinet DVR TV Router Receiver Xbox Greenhouse Case Cooling

• ✅ Precision Fan & Pump Speed Control Adjust voltage from 3V to 12V to fine-tune fan speed, airflow, and water pump flow rate. Lower voltage reduces noise and power consumption, while full 12V delivers maximum cooling performance—perfect for balancing quiet operation and effective heat dissipation in PC builds, water cooling loops, and server cabinets.
• ✅ Universal Compatibility for All 12V Devices Comes with a 35cm DC5521 to 5-port 4-pin fan splitter, supporting 2-pin, 3-pin, and 4-pin fans, water pumps, and any DC5521-compatible devices. The 5-way splitter lets you power and control up to 5 fans simultaneously, eliminating the need for multiple adapters in multi-fan setups.
• ✅ Digital Voltage Display & Safety Protection Built-in LED screen shows real-time output voltage, so you can set and monitor levels at a glance. Equipped with over-voltage, over-current, over-temperature, and short-circuit protection to safeguard your expensive fans, pumps, and DIY electronics from damage.
• ✅ Wide Input Voltage & Versatile Use Cases AC 100-240V input works with US household outlets, converting to adjustable DC 3-12V 5A (max 60W) power. Ideal for computer case cooling, home electronics, water cooling systems, DIY projects, routers, server cabinets, LED strips, and more—one adapter for all your variable voltage needs.
• ✅ Plug-and-Play, Compact & Durable Design Ready to use right out of the box with no complicated setup. The compact, lightweight adapter features a rugged ABS housing and reinforced cables for long-lasting use. The included splitter cable (35cm length) keeps your setup organized, and the on/off switch makes powering your devices easy without Money Back Guarantee:We offer 30 Day Money Back Guarantee from the day you purchased if you’re not satisfied with your product. If you have any questions about our products, please contact us as soon as possible. Customer satisfaction is our absolute priority.
  Shipping:We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control.We offer free shipping to the lower 48 states and ship within 3 business days of payment, usually sooner. We do not accept P.O. Boxes. Please provide a physical address. You will be notified via messages as soon as your items ship.
  Delivery：We will ship out the item in 2-3 working day after receiving the payment. Usually the delivery takes 2-5 business days. If you don't receive the items after 10 days, please feel free to contact us. You'll get a replacement or a full refund.Please DO NOT open a return request or leave negative response without asking for help.
  Returns:We offer a 30-Day Return Policy on defective/wrong items or items which you are not completely satisfied with. You have the option for a full-refund or an exchange of the item.Returned items must be in all of the original packaging and include all of the original accessories or items that came with it. The item and package should be in original condition.
  Contact Us: Any queries or issues incurred, please feel free to contact us via message, we will get back to you within 24 hours.Please DO NOT open a return request or leave negative response without asking for help.
  response:Your response is very important to us. After you get your package and you are satisfied with our service, please leave us positive response. We're highly appreciated for your POSITIVE response & 5 stars. Enjoy shopping.