Features: This 30cm USB extension cable with a built in power switchers provides convenient on/off control for low power USB devices like fans, lamps, and LED lights, eliminating frequent plugging/unplugging. Ideal for office workers, home users, and enthusiasts needing effortless control over USB powered desktop accessories and small appliances. Perfect for workspaces, bedrooms, or studios to manage cooling fans during PC operate, adjust desk lamp brightness, or power seasonal decorative lighting setups. Crafted from durability plastic, this USB switchers cable ensures reliability performances for 5V/2A devices while protecting USB ports from wear through its intelligent power interruption design. Note:USB switchers cable, can only charging, does not support data transmission; Specifications: Component: plastic Length:Approx. 30cm/11.81inch 2Option Color; Package Includes: 2pcs USB switchers Cable note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color