The HPE 821243-001 is a 350-W power supply without hot-plug functionality, designed for HPE server and workstation systems. This power supply delivers reliable 350-watt performance with stable voltage regulation for consistent system performance. The lack of hot-plug functionality means that the unit cannot be replaced while the system is powered on, requiring a system shutdown for installation or replacement. Built with industrial-grade components, this power supply offers efficient power conversion with typical efficiencies that meet standard server requirements. The unit includes standard power connectors that are compatible with HPE server architectures and provides comprehensive protection against overvoltage, overcurrent, and short circuits. With dimensions of approximately 15 cm in length, 8 cm in width, and 4 cm in height, the compact design fits into standard HPE server chassis configurations. Weighing around 800 g, the unit features robust build quality suitable for continuous operation in data center environments. The operating temperature range extends from 10 °C to 35 °C with a humidity tolerance of 20% to 80% non-condensing. The power supply supports standard input voltage ranges of 100-240 V AC at 50-60 Hz frequency. This unit serves as a replacement component for HPE servers with 350-watt power requirements, ensuring compatibility with specified HPE system models. The design emphasizes reliability and consistent power delivery for mission-critical computing applications, where stable power supply is essential for system integrity and data protection.