{"product_id":"280w-power-supply-replacement-for-dell-optiplex-gx520-gx620-740-745","title":"280W Power Supply Replacement for Dell Optiplex GX520 GX620 740 745","description":"\u003cp\u003eOur review of the 280W Power Supply Replacement for Dell Optiplex systems finds it best suited for users who need a direct, tested replacement for aging or failed OEM units. It delivers the core benefit of compatibility with a long list of Dell part numbers and desktop models, making it a straightforward swap for Optiplex GX520, GX620 and similar systems. The bottom line: buy this if you need a correct-fit power source that restores a working Dell desktop quickly and without fuss.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide compatibility:\u003c\/strong\u003e Supports many Dell part numbers such as MH596, MH595, RT490 and others so it replaces a range of original units without modification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel match guidance:\u003c\/strong\u003e Lists compatible model numbers and prompts users to check their model number before purchase, which helps avoid ordering mistakes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector set:\u003c\/strong\u003e Supplies a 24-pin motherboard power, SATA and Molex connectors plus a floppy connector so typical Optiplex configurations are supported.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual voltage input:\u003c\/strong\u003e Accepts 100-120V or 200-240V AC input (50-60Hz), enabling use in different regional mains without an external converter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTested before shipping:\u003c\/strong\u003e Each unit is tested prior to dispatch, offering buyers reassurance that the power supply should power up on arrival.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis power supply is aimed at desktop owners, IT technicians and refurbishers who maintain Dell Optiplex GX520, GX620, 740, 745, 755 and a selection of Dimension and GX280 systems and need a direct, parts-compatible replacement. It is particularly useful for machines that require the specific 24-pin and legacy connectors listed.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for users with modern small-form-factor desktops that use proprietary low-profile power supplies or for those who need higher wattage for power-hungry add-ons. Also check your exact part and model numbers before buying if your system is a close variant.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBroad parts compatibility reduces time spent identifying the correct replacement.\u003c\/li\u003e\n\u003cli\u003eComplete connector set (24-pin, SATA, Molex, floppy) covers common drive and board needs.\u003c\/li\u003e\n\u003cli\u003eDual voltage input makes it usable in different electrical regions without hardware changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLimited to a 280W output, so it is not suited for heavily upgraded systems with modern high-draw components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eRatuforez\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e280W Max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Input\u003c\/td\u003e\n\u003ctd\u003e100-120V~\/6A, 200-240V~\/3A (50-60Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectors\u003c\/td\u003e\n\u003ctd\u003e1 x 24-pin MB, 2 x SATA, 1 x 4-pin Molex, 1 x Floppy, 1 x 4-pin ATX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eOptiplex GX520 GX620 740 745 755 210L 320 330; Dimension C521 3100; GX280 New Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Part Numbers\u003c\/td\u003e\n\u003ctd\u003eMH596 MH595 RT490 NH429 P9550 U9087 X9072 NC912 JK930\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 280W replacement is a pragmatic, cost-effective option for repairing legacy Dell Optiplex and compatible systems because it matches many OEM part numbers and provides the necessary connectors. It is good value for anyone restoring a standard office or home Dell desktop, but users with upgraded hardware should consider a higher wattage, modern supply.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my Optiplex GX520?\u003c\/strong\u003e\u003cbr\u003eYes, the unit lists Optiplex GX520 among compatible models, but you should confirm your original part number matches one of the listed part numbers before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it support both 120V and 240V?\u003c\/strong\u003e\u003cbr\u003eYes, it accepts 100-120V~\/6A and 200-240V~\/3A at 50-60Hz, so it can be used in different mains regions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre drives and peripherals supported?\u003c\/strong\u003e\u003cbr\u003eYes, the power supply includes SATA, 4-pin Molex and a floppy connector to support common drives and older peripherals.\u003c\/p\u003e","brand":"Ratuforez","offers":[{"title":"Default Title","offer_id":48227341172955,"sku":"B07V2P5S65","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81TN8gctBpL._AC_SL1500.jpg?v=1770835916","url":"https:\/\/gearmusthave.com\/products\/280w-power-supply-replacement-for-dell-optiplex-gx520-gx620-740-745","provider":"GearMustHave","version":"1.0","type":"link"}