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This high-quality 180W TFX form factor switching PSU is a reliable aftermarket replacement strictly built to OEM specs for Lenovo Yangtian series business desktops including W4095c, M4200f-00, M4601c, M4900c-00, T4900d and T6900c, fully interchangeable with original HK280-23PP, PA-2181-1, PCE027 and PCE028 power units. Adopting advanced ATX12VO 12V-only output architecture, it delivers consistent steady power to satisfy daily office document processing, browsing and regular home computing workloads. Same dimension and complete original cable harness with exclusive 10Pin motherboard + 4Pin CPU connectors enable hassle-free direct installation. Intelligent speed-adjust cooling fan balances low operational noise and optimal thermal performance. Comprehensive built-in safety protection circuits effectively prevent internal hardware breakdown caused by abnormal power fluctuations, an economical cost-effective repair option to replace defective factory power supply.