Tripp Lite SMART550USB 550VA 300W UPS Battery Back Up Tower AVR 120V USB RJ11, 6  Outlets 550VA/300W power capacity; compact mini-tower design Automatic voltage regulation, battery backup and surge protection 6 AC outlets (3 UPS/surge, 3 surge only); tel/DSL (RJ11) line protection; 6-ft cord USB communication port and FREE PowerAlert software (Web download) $200,000 Ultimate Lifetime Insurance; 3-year warranty 550VA/300W power capacity; compact mini-tower design 6 AC outlets (3 UPS/surge, 3 surge only); tel/DSL (RJ11) line protection; 6-ft cord USB communication port and FREE PowerAlert software (Web download) $200,000 Ultimate Lifetime Insurance; 3-year warranty 550 VA power capacity 6 protected outlets Built-in USB port