This is a Mean Well 20W 5V 4A power supply. Our recommended power supply for enjoying MiSTer safely and reliably.
It supports an input voltage of 85 VAC to 264 VAC making it suitable for most countries. A standard 'kettle lead' style mains cable is required which is not included.
This power supply is well suited to handling a MiSTer system with multiple power hungry USB devices such as external harddrives.
More power to your MiSTer!