Hey, that's a nice PSU! Leave the switch at 220V, the real voltage range it accepts is much wider. It's 88~132VAC for switch at 110V position and 176~264VAC for 220V.
Please make sure you read the HAS instruction manual and refer to FAQ if you're unsure how to connect the PSU - https://homearcadesystem.wordpress.com/faq/
Please make sure you read the HAS instruction manual and refer to FAQ if you're unsure how to connect the PSU - https://homearcadesystem.wordpress.com/faq/
