Based on this product's specifications, here are some alternatives and similar models
Power Supply Unit FSP Twins PRO 500W
Summary description:
The FSP Twins PRO 500W power supply unit is designed for servers with a total power of 500W. It features a 20+4 pin ATX connector, non-modular cabling, and operates on an AC input voltage of 100-240V with a frequency of 50-60Hz. Certified with 80 PLUS Gold for efficiency, it comes in black with two 4 cm fans for optimal cooling. Includes cables for CPU, PCIe, and SATA.