This versatile USB cable features a built-in 3-speed adjustable switch, perfect for controlling devices like small fans, motors, massagers, and LED strip lights. The switch settings include High (100%), Medium (75%), and Low (45%), allowing precise control over device operation without the need for voltage boosters. Designed with a USB Type A male to female connector, this adapter cable is ideal for enhancing cooling solutions. It helps manage device speeds across various settings, ensuring your electronic devices remain cool and perform optimally, thus extending their lifespan. The cable also functions as an inline switch for LED strip lights, enabling you to create custom lighting effects. Adjust your LED lighting to the desired intensity, whether it's cozy and warm or bright and vibrant, to suit any mood or occasion at any time. Equipped with power support functions, the USB extension cable can be used as a male-to-female adapter. Simply plug the male end into a USB power source and connect the female end to your desired device for easy power or control. Constructed with a flexible PVC sheath, the cable is waterproof, anti-cracking, wear-resistant, and resistant to pulling. Nickel-plated USB connectors ensure rust resistance and durability, while the easy plug-and-play functionality and a cord length of 30cmoffer convenience and reliability. Color: Black Material: plastic Package Contents: 2*USB Extension Cord Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.