ITEM NAME:USB Power Cable with Power Switch for Arduino Raspberry Pi 3/2/B/B+/A Description: Durable, Plug and Play Works great with USB power supplies, fits for a small desk lamp/fan, LED lights, and other computer‘s peripheral small power electrical power supply Addational On/Off switch for any USB-.1x USB Extension Cable with Switch On/Off. Addational On/Off switch for any USB-powered project simply. Lenght: Approx.