Vertiv Liebert PSI5 1100VA Tower 120V | Desktop UPS, SNMP, Enterprise

Keep more essential equipment online when utility power drops with the Vertiv Liebert PSI5 1,100 VA tower UPS. This 120 V model is sized for small infrastructure loads that need more capacity than a basic desktop UPS can provide, while still fitting into spaces where rack hardware is not practical. The PSI5 line is built for operational visibility as much as backup power. With SNMP card support through the RDU120 card, it can be incorporated into monitoring workflows that help IT teams respond to power issues before they become outages. That matters in branch offices, front-office environments, and edge locations where a missed power event can interrupt service or force manual recovery. The 1,100 VA rating gives this model more breathing room for connected devices, which can translate into better runtime margin and less strain during transfer events. For buyers comparing it with lower-cost consumer units, the difference is not just capacity. It is the combination of managed monitoring, business-oriented design, and the ability to protect more critical load without moving to a larger rack-based system.