Ultra-compact standby UPS with built-in DB9 serial monitoring port protects PCs, network workstations, and other systems reliant upon a basic communications interface for UPS monitoring and unattended system shutdown. Maintains AC output during blackouts and brownouts starting at 99V. Includes DB9 monitoring port with cabling, TEL/DSL line surge suppression, surge only outlets and LED indicators. PowerAlert software available free via download.Features• INTERNET350SER standby UPS offers protection from blackouts, brownouts and surges on both AC and dialup modem lines• Provides seamless battery derived AC output during blackouts and severe brownouts so that connected equipment can be shut down without data loss• Built-in DB9 interface port with basic communication monitoring enables automatic system shutdown if power fails while the system runs unattended• PowerAlert software available via free download.• 3 battery supported outlets protect computer, monitor and one vital system peripheral, plus 3 additional surge suppression-only outlets for printers and other system accessories not requiring battery support• Attractive stealth black UPS color scheme• Built-in single line phone jacks with line splitter protects peripherals with a standard dialup phone line connection, phone cable included• Built-in audible alarm and front panel LEDs offer continuous status information regarding line and battery power operation• 350VA /180 watt power handling ability supports entry-level PC systems for several minutes during power fail conditions• Includes attached 6 ft. AC power cord with space saving right-angle plug, on/off power switch• Compatible with 120V/60 Hz applications in USA, Canada, Mexico and other countries