This Supermicro 1U cable management arm (MCP-290-00085-0N) is compatible with most 1U chassis. This cable management arm can extend from 2.1 inches to 27.6 inches. This Supermicro cable management arm has been fully tested and validated by Supermicro to ensure the best quality. *All the installation instruction could be found in the chassis or system manual Manufacturer Supermicro Outer Rail Extendable Length 13.1" to 33.1" Designed For 1U Warranty 1 year warranty Product Environmental Compliance RoHS and REACH compliant, details available upon request