HP Rack-mountable UPSs provide maximum uptime in the event of a power problem for a variety of rack-based computer systems, providing powerful performance while occupying minimal rack space. The HP R1500 G2 UPS is a 1U, high power density solution designed for customers who want to provide power protection, for maximum uptime and data corruption avoidance, in space-constrained rack environments. In addition, the R1500 G2 can be connected to the host server via the USB port for UPS management.