APC Smart-UPS On-Line, 4200 Watts / 6000 VA, Input 230V / Output 230V , Interface Port DB-9 RS-232, RJ-45 10/ 100 Base-T, Smart-Slot , Extended runtime model , Rack Height 3 U Includes: CD with software, Smart UPS signalling RS-232 cable, User Manual, Web/ SNMP Management Card