Description The Compaq ProLiant 5500 sets the new standard for performance and value in the enterprise. This enterprise-class server combines advanced multiprocessing capabilities with the latest high performance system architecture and high performance I/O subsystems to deliver industry-leading performance for this price class. Additionally, the ProLiant 5500 delivers industry-leading performance in a space-efficient design to provide maximum computing power and lower total cost of ownership for multi-server rack environments. The ProLiant 5500 combines all of these features with excellent expansion, fault tolerant and management capabilities to deliver outstanding value for business-critical applications.The Compaq Hot Plug DC Power Supply hot plug capability allows customers to change a failed power supply unit without powering down the server when multiple power supplies are installed in a server. The DC output green LED on each DC module will change color when the power supply reaches a failed condition.