This document describes the FSP500-70RGHBB1 redundant power supply for servers. It is a 500W power supply in a PS2 form factor that does not require a front bracket, making it suitable for tower and 3/4U chassis. Each module can provide 500W of power and support hot swapping. If one module fails, the other can instantly take over without interrupting the server. The power supply has features like 80 Plus Gold efficiency, PMBus support, and protections. It is presented as a reliable and easy to install redundant power solution for home and enterprise servers.