Adafruit USB to 5.5mm/2.1mm DC Booster Cable - 9V or 12V Output

This cable features an integrated boost converter, allowing it to provide a higher DC voltage from any USB port, such as those on computers or battery packs. With a built-in display and switch, you can easily select between 9V or 12V output, with the voltage clearly indicated.Benefits include versatile power solutions for 9V or 12V devices, with a current draw capacity of up to 1A at 9V and 750mA at 12V. The cable comes equipped with a 2.1mm inner diameter (5.5mm outer diameter) DC plug, a common standard, along with a 3.5mm / 1.35mm adapter for additional compatibility.