Digital, adjustable output with precise display Digitally controlled voltage and current settings with a clear readout for accurate monitoring. Voltage adjustment step: 0.01 V or 0.1 V (selectable). Current adjustment step: 0.001 A or 0.01 A (selectable). Integrated current limit (current threshold) for safe operation; current can be set from 0 to 2 A. USB output and reliable connections Built-in USB socket to power USB devices directly (for example USB fans). Includes a push-type, screwless quick-clamp terminal for fast, tool-free wiring and secure connections. Fast-charge negotiation and compatibility Intelligent fast-charge negotiation/emulation to overcome insufficient USB input port power by negotiating higher current where available. Compatible with mainstream fast-charge protocols such as QC 2.0, FCP and AFC. Negotiation mode can be set to automatic, forced, or disabled according to your needs. Performance and use limits High usable power up to 15 W, maximum current 2 A. Fully adjustable output with the ability to limit current from 0 to 2 A for device protection and testing. Key benefits — why you need this product Precise control: fine voltage and current steps plus a clear digital display make it easy to set and verify output for sensitive electronics. Safer powering and testing: adjustable current limiting prevents accidental overcurrent when powering small devices. Better USB compatibility: built-in fast-charge negotiation helps get adequate current from compatible USB supplies without additional adapters. Fast installation: push-type quick clamps speed up wiring and reduce installation errors. Practical applications (specific use scenarios) Fan speed control: Power and finely adjust the speed of USB fans for cooling small enclosures or electronics benches. Adjustable router or small-network device power: Provide a stable, adjustable USB supply for routers or network devices that require a specific current limit. Bench testing and development: Use as a compact adjustable USB power source to test or debug USB peripherals, sensors, or small embedded projects while limiting current to protect prototypes. What it does not change All functions and specifications above reflect the device capabilities: digital voltage/current control with the stated step resolutions, USB output, quick-clamp terminal, intelligent fast-charge negotiation (QC2.0/FCP/AFC support), 15 W/2 A maximum, and 0–2 A current limiting.