The MBK550E is a 550VA/330W 120 VAC line-interactive UPS with 4 battery backup/surge outlets, 2 surge-only outlets, USB communication port, MINUTEMAN SentryII™ power management software and diagnostic software, and RJ45/RJ11 network/modem surge protection.
Back-up time - full load: 5.3 minutes
Back-up time - half load: 14.2 minutes

Features:

The built-in AVR (Automatic Voltage Regulator) provides a boost function to compensate for low AC voltage situations like brownouts and sags, saves internal battery power for blackouts and extends the life of the batteries
Independent Battery Bypass™ allows the UPS to provide voltage regulation with surge and spike protection on utility AC power even when batteries are weak or dead
Includes MINUTEMAN SentryII™ power management and diagnostic software to provide added control and allow unattended PC shutdown (for use on individual PCs or multiple workstations on networks)
Integrated USB port for software communications (USB cable included)
3-Year Warranty for Internal Electronics 2-Year Warranty for Batteries