It must be plugged into a Type-C port with the PD protocol to output 12V. If plugged into an ordinary Type-C port, it can only output 5V. The Type-C port with the PD protocol generally supports 12V output.
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sourcing map 36W PD Trigger Cable, 12V 3A 3.5x1.35mm Type-C Right 1.0m/3.3ft
sourcing map Type-C USB-C PD2.0/3.0 to DC PD Protocol Fast Charge Trigger Welding Terminal Model Detector Bare Board Design for DIY Power Solutions
sourcing map Type-C Female PD Protocol 20V Fast Charge Trigger Welding USB Model Detector
sourcing map 5 Pack Type-C USB-C PD2.0/3.0 to DC PD Protocol Fast Charge Trigger Multi-Voltage Selection Model Detector Bare Board Design for DIY Power Solutions
sourcing map 1Pcs 6.6Ft Single Mode Simplex OS2 Armored Fiber Optic Patch Cable LSZH SC/APC-SC/APC Jumper Optical White for Fiber Optic LAN Networks with Adapter