HPE J2R01A Sealed UPS, Rack-Mountable/External with Floor Stand, Black HP Line Interactive Single Phase Uninterruptible Power System Tower models lower your power protection cost by providing up to eight (8) power outlets per UPS HP Line Interactive Single Phase Uninterruptible Power System Rack/Tower (R/T) models can be used in a traditional rackmount environment or converted to a tower UPS to support tower servers and other HP Line Interactive Single Phase Uninterruptible Power System Rackmount models provide from 1.5kVA (R1500 G4) up to 7.2kVA (R7000) of output power in as little as 4U of rack space