A Power Supply is a direct replacement for the original part, which supplies power to other component in your Dell system. This product has been designed to convert general-purpose alternating current electric power to usable low-voltage direct current power for the internal components. It is supported by Dell Technical Support when used with a Dell system. Please use the Service Tag Lookup feature in the Parts For Your Dell tool. This will allow us to identify your PC’s power limits and chassis requirements and make recommendations. Refurbished Spare Parts are parts retrieved from Dell-branded systems that have been returned, some of which have never been used. All Dell refurbished spare parts are certified to comply with all original Dell factory performance specifications and come with a 90-day limited hardware warranty. Dell’s limited hardware warranty covers defects in materials and workmanship in your Dell-branded hardware products. For additional details on our warranty services, please visit www.dell.com/warranty . Device Type: Power supply Power Capacity: 250 Watt Designed For: OptiPlex GX280, GX280n Device Type: Power supply Power Capacity: 250 Watt Features: Power Factor Correction (PFC) Designed For: Dell OptiPlex GX280, GX280n