APC SRV3KRILRK Easy UPS ONLINE SRV RM Ext. Runtime 3000VA 230V with Rail kit Batt pack Battery Backup & Surge Protector for Electronics and Computers High quality, Double-conversion On-line UPS designed for essential power protection needs even in the most unstable power conditions. Includes: Basic UPS signalling RS-232 cable, CD with software, Rack mounting brackets, Rack mounting support rails, USB cable, User manual