Hi-Link modules (also called HLK modules) are, in fact, PCB-mounted, encapsulated, and galvanically isolated switching AC/DC buck converter modules ... 5-V to 3.3-V DC/DC buck power supply adapter for ...

A power supply for electronic devices. Also called an "AC adapter" or "charger," power adapters plug into a wall outlet and convert AC to a single DC voltage. Computers use multiple DC voltages ...