Tripp Lite SU750XL 750VA 600W UPS Smart Online Tower 100V/110V/120V USB DB9 SNMP RT, 6 Outlets 750VA / .75kVA / 600 watt on-line double-conversion tower UPS Expandable runtime, Hot-swappable battery modules USB, RS232 &amp; EPO ports; support for SNMP/WEB card options Front panel status LEDs with detailed load and battery metering 2 independently switchable output load banks