Computer hardware; computer hardware adapted to be installed on racks; electronic controllers for computer systems; electronic controllers for computer systems adapted to be installed on racks; electronic sensors, namely, electronic environmental sensors for temperature, humidity and other environmental information; electronic positioning tags; asset management systems comprising computer hardware and software for data centers; infrastructure management systems comprising computer hardware and software for data centers; electrical power management systems for data centers; power electronics for data centers, namely, power distribution units (PDUs); and KVM switches