The motherboard lacks a CPU power connector.
The motherboard lacks a CPU power connector.
You're looking for a compatible power supply for your Fujitsu D3220-A12 motherboard. Since the original PC used a PSU with only one motherboard connector, you'll need to ensure the new PSU supports that setup. The cooler master B500 is a good option as it's designed for high-performance builds. You can purchase a standard PSU that matches your current configuration and upgrade accordingly.
The power supply unit should work without issues, as many makers use 4-pin to 6-pin CPU connectors.