HPE 800W Flex Slot Platinum Power Supply | 94% Efficiency | Hot Plug | P38995-B21

HPE 800W Flex Slot Platinum Hot Plug Low Halogen Power Supply Kit (P38995-B21)

The HPE 800W Flex Slot Platinum Hot Plug Low Halogen Power Supply Kit (P38995-B21) is an enterprise-grade server power supply designed for compatible HPE server and storage platforms. It provides a maximum rated output of 800W and supports a 100–240V AC input range, making it suitable for a broad range of enterprise data center power environments.

The power supply belongs to HPE’s Flex Slot Platinum family and supports power efficiency of up to 94%. The high-efficiency design helps reduce power waste and improve energy efficiency in supported server deployments. HPE notes that efficiency ratings are based on testing performed according to the 80 PLUS program requirements.

The HPE Flex Slot form factor is approximately 25% smaller than the previous-generation HPE Common Slot power supply design. This compact form factor helps leave additional internal space for server options while maintaining the required power capacity for compatible systems.

The hot-plug design provides fast, tool-less access to the power supply, simplifying installation, removal and servicing. This feature is particularly useful in enterprise environments where simplified maintenance and serviceability are important considerations.

The P38995-B21 uses a low-halogen construction and includes a standard C-14 power inlet connector. HPE’s QuickSpecs specify a 100–240V RMS input voltage range and a nominal input frequency range of 50–60Hz.

HPE identifies P38995-B21 as compatible with HPE ProLiant Gen11, Gen10 Plus Intel and Gen10 Plus v2 AMD servers. HPE’s broader Flex Slot documentation also covers selected HPE ProLiant Gen10, Gen10 Plus and Gen11 servers, selected HPE Apollo Gen10 and Gen10 Plus systems, and HPE Alletra 4100 data storage servers. Compatibility should always be verified against the QuickSpecs for the specific server model before installation.

The power supply provides a 0.99 power factor and has a maximum inrush current of 30A peak with a maximum inrush duration of 10ms, according to HPE’s QuickSpecs. These specifications are relevant when planning power distribution for compatible server configurations.

The HPE 800W Flex Slot Platinum Hot Plug Low Halogen Power Supply Kit is intended for enterprise server environments requiring efficient and serviceable power delivery. Its combination of 800W output, Platinum efficiency, Flex Slot design, hot-plug functionality and low-halogen construction makes it suitable as a replacement or additional power supply for compatible HPE infrastructure.

Key Features

• 800W maximum rated power output
• Up to 94% power efficiency
• Platinum-rated Flex Slot design
• 100–240V AC input voltage range
• 50–60Hz nominal input frequency
• 0.99 power factor
• Hot-plug installation and replacement
• Fast, tool-less service access
• Low-halogen construction
• Standard C-14 power inlet connector
• Compact Flex Slot form factor
• Approximately 25% smaller than previous-generation HPE Common Slot power supplies
• Supports selected HPE ProLiant servers
• Supports selected HPE Apollo systems
• Supports HPE Alletra 4100 data storage servers