The International Standard Payload Rack (ISPR) has been adopted by the International Space Station (ISS) program to support efficient integration and interchangeability of payload hardware – and to maximize joint research among investigators. A typical rack. The EXPRESS Racks provide structural interfaces, power, data, cooling, water, video, command and control, vacuum exhausting, nitrogen supply, and other resources needed to operate research in space. It provides a secure and organized environment for servers, UPS systems, switches and other IT devices. Provides primary means of communication between EXPRESS rack, the.