D11-300N1A Specifications
HP 300W ATX Power Supply (OEM Desktop PSU)
Manufacturer: HP (Hewlett Packard Enterprise)
Manufacturer Model: D11-300N1A
Product Line: HP Desktop / ProDesk / Pavilion Systems
Product Type: Internal ATX Power Supply Unit
KEY FEATURES
Power Capacity: 300W
Input Voltage: 100–240V AC (auto-ranging)
Input Current: 4A (at 200–240V)
Input Frequency: 50–60 Hz
Form Factor: ATX internal desktop PSU (non-hot-plug)
COMPATIBILITY
HP ProDesk 405 G1 / 400 G1 series
HP Pavilion desktop series (various models)
HP Envy / Compaq desktop systems (selected configurations)
OEM systems using D11-300 platform PSU
PERFORMANCE
Power Output: 300W continuous
Design: OEM ATX switching power supply (Chicony / Delta variants depending on revision)
Rail Design: Standard ATX multi-rail outputs (+12V, +5V, +3.3V, +5VSB)
Protection: Over-voltage, over-current, short-circuit protection
Cooling: Integrated internal fan
Reliability: Designed for OEM desktop workloads
ENVIRONMENTAL
Operating Temperature: 0°C to 50°C
Storage Temperature: -20°C to 80°C
Humidity: 5% to 95% non-condensing
PHYSICAL
Form Factor: ATX internal PSU
Installation: Screw-mounted inside desktop chassis
Weight: ~1–2 kg (approx.)
Connectors: 24-pin ATX main power + CPU + SATA/Molex (varies by revision)
SUMMARY
This is a 300W ATX internal power supply (D11-300N1A) used in HP ProDesk and Pavilion desktop systems, designed for stable OEM desktop power delivery in business and home environments.

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