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This USB DC boost cable is designed with a built-in step-up circuit, safely converting 5V USB power into stable 12V voltage supply. Equipped with a handy inline on/off switch for effortless power management anytime. Adopts USB 2.0 male to standard DC 5.5×2.1mm male connector, no driver required, ready for instant use. The 1-meter flexible cord meets daily placement needs while keeping wiring tidy. Widely applicable for powering routers, surveillance cameras, table lamps, mini speakers, USB fans and other small 12V electronic devices.