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) is an enterprise server power supply designed for compatible HPE ProLiant, HPE Apollo and HPE Alletra systems. It delivers up to 800W of power, supports 100–240V AC input, and features the HPE Flex Slot form factor with fast, tool-less hot-plug access for simplified installation and servicing. HPE specifies efficiency of up to 94% for Flex Slot Platinum power supplies. :contentReference[oaicite:0]{index=0}
- 800W maximum power output
- Up to 94% power efficiency
- Platinum-rated power supply
- HPE Flex Slot form factor
- Hot-plug design
- Low-halogen construction
- 100–240V AC input voltage
- 50–60Hz input frequency
- Standard C-14 power inlet
- Fast, tool-less hot-plug access
- Supports selected HPE ProLiant, Apollo and Alletra platforms
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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
TECHNICAL SPECIFICATIONS
| Brand | HPE |
|---|---|
| Product Type | Server Power Supply Kit |
| Product Number | P38995-B21 |
| Product Name | HPE 800W Flex Slot Platinum Hot Plug Low Halogen Power Supply Kit |
| Power Supply Family | HPE Flex Slot |
| Maximum Rated Output | 800W |
| Efficiency | Up to 94% |
| Efficiency Rating | Platinum |
| Input Voltage Range | 100–240V AC |
| Input Frequency | 50–60Hz |
| Power Factor | 0.99 |
| Maximum Inrush Current | 30A peak |
| Maximum Inrush Current Duration | 10ms |
| Form Factor | Flex Slot |
| Installation Type | Hot Plug |
| Power Inlet Connector | C-14 |
| Construction | Low Halogen |
| Compatible Platforms | Selected HPE ProLiant Gen11, Gen10 Plus Intel and Gen10 Plus v2 AMD servers |
| Additional Platform Support | Selected HPE ProLiant Gen10, Gen10 Plus and Gen11 servers, selected HPE Apollo Gen10 and Gen10 Plus systems, and HPE Alletra 4100 |
| Warranty | Subject to HPE warranty terms and the associated system/service coverage |
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