The [355892-001](https://www.newtownspares.com/355892-001/) - HP 575-Watts Redundant Hot Swap Power Supply for ProLiant DL380 G4 Server is a high-quality power supply that is designed to provide reliable power to your HP ProLiant DL380 G4 server. It is a redundant power supply, which means that if one power supply fails, the other will continue to operate, ensuring that your server remains up and running. It is also a hot-swap power supply, which means that you can replace it without having to turn off your server.