The power supply module marked PSM500-AC is an AC/DC Hot-Swap module with an output power of 600 W, output voltage 54.5 V, maximum current 11 A and input voltage 230 V AC. The source is intended for the MikroTik Cloud Router Switch - CRS320-8P-8B-4S+RM. The power supply is hot-swappable, which helps ensure no system interruption during installation or replacement.