{"product_id":"cyberpower-st900u-standby-ups-system-compact-home-backup","title":"CyberPower ST900U Standby UPS System - Compact Home Backup","description":"\u003cp\u003eIn this review the CyberPower ST900U is presented as a compact standby UPS aimed at home office users, gamers, and anyone who needs short-term backup and surge protection. The bottom line: this UPS is for people who want a quiet, space-saving unit that can keep a PC, console, or router running long enough for a safe shutdown and protect devices from spikes. The single biggest reason to buy is the practical combination of six battery backup outlets, six surge-only outlets and two USB charging ports in a small footprint.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e900VA\/500W capacity:\u003c\/strong\u003e Provides reliable battery backup power to keep a desktop or entertainment setup alive long enough for a safe shutdown during outages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 total outlets:\u003c\/strong\u003e Six battery backup and surge protected outlets plus six surge-only outlets let users separate critical gear from nonessential devices on the same unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo USB charging ports:\u003c\/strong\u003e Shared 2.1 amp output lets you charge phones and tablets without using an outlet, freeing AC receptacles for larger devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidely spaced outlets:\u003c\/strong\u003e Four widely spaced outlets accommodate larger power adapters so you do not lose neighboring sockets to bulky plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreenPower high efficiency design:\u003c\/strong\u003e Lower idle power draw reduces energy use compared with less efficient UPS designs, which helps for always-on home office setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-year warranty and guarantee:\u003c\/strong\u003e The included warranty and connected equipment guarantee provide extra assurance for protecting valuable electronics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe ST900U is best for a home office worker who needs to protect a PC, monitor, external drive and network gear, or for a living-room gamer who wants graceful shutdown capability for a console and router. Its compact size means it fits neatly under a desk or next to a chair, making placement simple in smaller rooms.\u003c\/p\u003e\n\u003cp\u003eThis is not a fit for users who need long runtime for whole-home power or for those requiring a pure sine wave output for very sensitive audio gear or some servers. For longer runtimes or true sine wave output, look to larger line-interactive or online UPS models instead.\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\u003ePractical mix of six battery backup outlets and six surge-only outlets for flexible device protection.\u003c\/li\u003e\n\u003cli\u003eCompact and relatively quiet design fits tight spaces and living areas without much noise disturbance.\u003c\/li\u003e\n\u003cli\u003eUSB charging ports and widely spaced outlets increase usability for modern setups with mobile devices and bulky adapters.\u003c\/li\u003e\n\u003cli\u003eGood warranty coverage plus a connected equipment guarantee adds peace of mind for protected devices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUses simulated sine wave output, which is fine for most home equipment but not ideal for sensitive audio hardware or some UPS-intolerant power supplies.\u003c\/li\u003e\n\u003cli\u003eSome users report mixed impressions of battery life and power saving in longer or repeated outages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Type\u003c\/td\u003e\n\u003ctd\u003eStandby UPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e900VA \/ 500W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlets\u003c\/td\u003e\n\u003ctd\u003e12 NEMA 5-15R (6 battery backup + surge, 6 surge only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Ports\u003c\/td\u003e\n\u003ctd\u003e2 ports, 2.1 amp shared output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlug\u003c\/td\u003e\n\u003ctd\u003eNEMA 5-15P with 5 ft cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput waveform\u003c\/td\u003e\n\u003ctd\u003eSimulated sine wave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3-year warranty including battery; connected equipment guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe CyberPower ST900U is a compact, value-oriented UPS that suits most home office and living-room entertainment setups. It offers a useful balance of battery-backed and surge-only outlets, USB charging, and a quiet, efficient design, making it a sensible buy for anyone who needs short-term backup and spike protection without the cost or complexity of larger systems.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHow long will it run a desktop computer?\u003c\/strong\u003e\u003cbr\u003eThe runtime depends on load, but this 900VA\/500W unit is designed to supply enough time for a graceful shutdown of a typical desktop and peripherals rather than extended runtime.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the USB ports fast enough to charge tablets?\u003c\/strong\u003e\u003cbr\u003eYes, the two USB ports share a 2.1 amp output which is adequate for charging phones and many tablets at a reasonable speed while other devices remain powered by AC outlets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the output waveform pure sine wave?\u003c\/strong\u003e\u003cbr\u003eNo, the ST900U uses a simulated sine wave output suitable for most home electronics but not recommended for some sensitive audio or specialized equipment.\u003c\/p\u003e","brand":"CyberPower","offers":[{"title":"Default Title","offer_id":48201723347163,"sku":"B07GZT2QW7","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61YlbT5PAQL._AC_SL1500.jpg?v=1770238444","url":"https:\/\/gearmusthave.com\/products\/cyberpower-st900u-standby-ups-system-compact-home-backup","provider":"GearMustHave","version":"1.0","type":"link"}