USB C to DC 9V: Built-in a PD smart chip,it can convert the PD Charger into DC 9V. It supports 9V 3A Max; This cable can be used for below devices with DC 5.5*2.5mm or 5.5*2.1mm and 9V needed, Such as Printer/Camera/CCTV/Router/Cable connection box/Live steam switcher/digtal piano/Electric drill/Speaker/Balenced bicvcle/LED strip/Hard disk/Battery Pack/Flashlight/OTT Set-box/Table Lamp/Network Switch and so on. If your equipment power Jack is DC 5.5mm x 2.5mm with 9V Neededyou can use this cable with a PD Charger or PD Power bank to power your equipment. PD Device Requirements: Please note that the power of the Type-C charger must be greater than the power of the output. If the USB C charger supports 5V/12V/15V/20V but not 9V, the cable will output the nearest lower voltage of 5V. this cable cannot be used for laptop charging This Cable is just a conversion device,you need to provide correct PD power Adapter or PD Power Bank which support 9V output.Please note the Type-C charger power