399771-B21 Specifications
HPE 460W Flex Slot Platinum Hot-Plug Power Supply
Manufacturer: Hewlett Packard Enterprise (HPE)
Manufacturer Model: 399771-B21
Product Line: HPE ProLiant Server Components
Product Series: Flex Slot Platinum Series
Product Type: Hot-Plug Redundant Power Supply Unit (PSU)
Product Name: HPE 460W Flex Slot Platinum Hot-Plug Power Supply
KEY FEATURES:
Power Capacity: 460 Watts
Input Voltage Range: 100–240V AC (Auto-ranging)
Input Frequency: 50/60 Hz
Efficiency Rating: 80 PLUS Platinum Certified (Up to 94%)
Form Factor: Flex Slot Hot-Plug Module
Hot-Plug Support: Yes (tool-less installation/removal)
Cooling: Integrated variable-speed fan
LED Indicators: Power, health, and fault status indicators
PERFORMANCE:
Output Voltage: 12V DC (Main)
Output Current: Up to 38A
Standby Output: +12VSB @ 2.5A
Redundancy Support: Supported (N+1 configuration)
Power Factor Correction (PFC): Active PFC for stable power delivery
ENVIRONMENTAL & RELIABILITY:
Operating Temperature: 10°C to 50°C (50°F to 122°F)
MTBF: >200,000 hours at 25°C typical load
Certifications: 80 PLUS Platinum, UL, CE, CSA, FCC, RoHS Compliant
Cooling Direction: Front-to-back airflow
PHYSICAL:
Form Factor: HPE Flex Slot
Dimensions: 8.6 × 2.7 × 1.6 inches (approx.)
Weight: ~0.68 kg (~1.5 lbs)
COMPATIBILITY:
Compatible with HPE ProLiant Gen9 servers, including:
HPE ProLiant DL360 Gen9
HPE ProLiant DL380 Gen9
HPE ProLiant ML350 Gen9
Other Flex Slot-compatible HPE server models
APPLICATIONS:
Designed for enterprise and data center environments requiring high-efficiency, hot-swappable, and redundant power to ensure continuous 24×7 server operation.

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