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This 260W switching power supply is an ideal aftermarket replacement PSU designed for HP and Lenovo 510S, M420, 700-24AGR small form factor desktops, fully compatible with original part codes PA-1261-7, PA-1181-7, PCK027, PCH018 and SP50H29606. Built with high-grade internal components following original factory specs, it delivers steady 260W reliable power to satisfy daily office computing, document processing and regular home desktop workloads. Equipped with factory identical complete wiring harness including exclusive 6Pin mainboard and 4Pin CPU power ports for plug-and-play installation with no extra adapters or case cutting required. Variable speed cooling fan automatically adjusts rotation speed to minimize running noise while optimizing heat dissipation. Comprehensive built-in safety protection modules effectively prevent hardware damage from overvoltage, overload, short-circuit and overheating, an affordable trustworthy substitute to replace faulty original slim desktop power unit