Line interactive UPS system offers voltage regulation, surge suppression & long-lasting battery support for personal computers, networking equipment & other sensitive electronics. Internal UPS circuits support entry level PC systems for up to 30 minutes during power failures so that connected equipment can be shutdown without data loss. A USB port (cable included) provides power management & unattended shutdown when used with PowerAlert Software (website download). Automatic voltage regulation corrects brownouts as low as 83V. Includes six outlets (three UPS / three surge-only). Built-in, single-line RJ11 phone suppression jacks protect modem, fax machine, cordless phone or other peripheral with a standard dialup / DSL phone connection. Offers 4 minute battery runtime with a full load of 550VA / 300 watts & 15 minutes with a half load of 275VA / 150 watts.