The RT1.5kVA, RT2.2kVA, and RT3kVA 2U Rack or Tower Uninterruptible Power Supply (UPS) offerings provide extended power protection with increased efficiency and simplified power management to safeguard the high-availability of System x® and ThinkServer® server environments. With efficiency ratings of up to 99%, these compact 2U rack or tower designs can help reduce energy usage without compromising performance or reliability. The 2U Rack or Tower UPS units can be installed in a data center rack cabinet or can be used as tower UPS units in office and distributed IT environments where extended power protection is required.