✅ 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 unplugging. Delinx 3-12V 5A Adjustable Power Adapter with 5-Port Fan Splitter Take full control of your cooling system with the Delinx 3-12V Adjustable Power Adapter, the ultimate solution for quiet, efficient, and customizable fan and pump speed control. Designed for DIY enthusiasts, PC builders, and anyone needing variable voltage power for 12V devices, this adapter lets you balance cooling performance, noise levels, and power consumption with ease. Why Choose Delinx? Unlike basic fixed-voltage adapters, our 3-12V variable power supply gives you complete control over your devices: Quiet Operation: Lower voltage reduces fan speed, eliminating annoying noise in home PCs, office setups, and bedroom systems. Custom Performance: Crank up to 12V for maximum airflow in gaming PCs, water cooling loops, or server cabinets. Multi-Device Control: The included 5-port 4-pin fan splitter lets you power and adjust up to 5 fans or pumps from a single adapter, simplifying messy setups. Key Features Adjustable 3-12V Output: Dial in the perfect voltage (3V, 4V, 5V, 6V, 8V, 10V, 11V, 12V) with the precision knob. The built-in digital display shows real-time voltage for accurate settings. 5A 60W Max Power: Delivers up to 5A of current, supporting most 12V fans, water pumps, LED strips, and low-power DIY electronics. Universal Compatibility: Works with 2-pin, 3-pin, and 4-pin fans, DC5521 water pumps, routers, LED strips, and more. The included 35cm fan splitter cable (DC5521 to 5x 4-pin) is ready to use with your existing devices. Full Safety Protection: Built-in short-circuit, over-voltage, over-current, and over-temperature protection ensures your devices stay safe even during unexpected issues. Wide Input Compatibility: AC 100-240V 50/60Hz input works with all US household outlets, making it perfect for home, office, and workshop use. Plug-and-Play Design: No software or complicated setup required. Just plug in, adjust the voltage, and power your devices with the built-in on/off switch. Common Applications PC Case Cooling: Adjust fan speeds for quiet home use or maximum gaming performance. Water Cooling Systems: Control pump flow rates to optimize cooling efficiency and reduce noise. Server Cabinets & Network Gear: Cool routers, switches, and servers with adjustable-speed fans. DIY Projects: Power LED strips, small motors, and electronics requiring variable voltage. Home Electronics: Cool gaming consoles, TV boxes, and other devices with quiet fans. Package Contents 1 x Delinx 3-12V 5A Adjustable Power Adapter (US Plug) 1 x 35cm DC5521 to 5-Port 4-Pin Fan Splitter Cable