AC-DC 5V 4A SMPS Micro USB Power Adapter

This 5V 4A Switching Mode Power Supply (SMPS) adapter with Micro USB output delivers a clean, regulated 20W of power from any standard mains socket, making it an ideal high-current power solution for single-board computers, Raspberry Pi boards, Android-based devices, development platforms, and any application requiring stable 5V at up to 4000mA through a Micro USB connection.

Built on a switching power supply topology rather than a conventional linear transformer design, this adapter achieves high conversion efficiency with minimal heat generation — keeping both the adapter and your powered device running cool even under sustained full-load conditions. The universal AC input range of 100–240V at 50/60Hz makes it globally compatible, working with mains power in Sri Lanka, the UK, the EU, the USA, and across Asia without any additional adapters or voltage converters.

Onboard protection circuits guard against overvoltage, overcurrent, and short circuit conditions, ensuring your connected devices are safe even in fault scenarios. The output cable terminates in a standard Micro USB Type-B plug with a positive-centre configuration, compatible with the Raspberry Pi 1 / 2 / 3 / Zero, Android devices, tablets, USB-powered hubs, and a wide range of development boards. The compact housing and fixed AC plug design keeps your workspace tidy and clutter-free.