Question What is the purpose of MCP-290-00073-0N (Supermicro Cable Management Arm for 2U, 3U and 4U chassis (Extendable Length: 70mm to 830mm)); and can it be installed on SC846E16-R920 chassis? Answer It's not a replacement to rail kit; and the purpose is to manage the cable neatly on the back of the chassis. It does not support SC846 chassis; only the following models are supported: SC219, SC829, SC828, SC835, SC836, SC936, SC743, SC745. Was this FAQ helpful? YES      NO Enter Comments Below: Note: Your comments/feedback should be limited to this FAQ only. For technical support, please send an email to support@supermicro.com.  Enter your email address below if you'd like technical support staff to reply:  Please type the Captcha (no space) 6 M A X FAQ Stats FAQ ID Related Category / Keyword Date Posted Code 15025 Other: - Chassis Compatibility Peripherals: - Sliding Rail 10/28/12     Print Answer