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This aftermarket 500W SFX-L switching power supply is manufactured per Dell original factory specification, dedicated replacement spare part for Optiplex 5070/7070/5080/7080/5090/3650/3670/3671/3260/3681 MT business desktops. High efficiency internal circuit reduces idle power draw to cut long-term electricity cost, extra wattage headroom resolves stock low-wattage limitation for discrete graphics upgrade. Consistent outer size and fixed mounting position enable seamless direct swap for defective original PSU, ideal replacement for PC repair stores, enterprise equipment maintenance and host hardware refurbishment projects.