Liebert PSA mixes unique features and extraordinary performance. Designed with simple controls for easy operation, it provides up to five minutes of back-up time at full load: more than enough time to save work in process and shut down your system. Shutdown software and a USB cable are also included, to allow remote alerts and automated graceful shutdown of the connected systems. – Available in four sizes: 500 VA, 650 VA, 1000 VA and 1500 VA – Offers multiple battery backed and surge protected sockets – Liebert PSA provides 5 or more minutes of battery backup (depending on load level) – Protects datalines – Fully RoHS compliant Benefits: User friendly LED display for easy operation Mix of battery-backed and surge-only sockets to adapt to different types of loads and requirements USB communications/shutdown software and cable included for plug and play use User replaceable batteries to maximize initial investment