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This 90W AC adapter provides steady 54V 1.67A power, serving as a perfect replacement for HP PA-1900-2P-LF original charger. Equipped with a dedicated 4PIN connector, it is fully compatible with HP part numbers 5066-2164, J9774 and multiple HPE/Aruba PoE switch models. High-quality components ensure efficient, low-heat operation during long-term use. Universal 100-240V input supports global applications, while comprehensive safety safeguards protect your devices from electrical damage. Ideal for office, data center and networking environments as a reliable power solution.