Synology Rail Kit and Cable Management Arm Package CMA-01 can be easily attached to compatible Synology rail kits RKS-02, helping you to organize data and power cables, optimize rack cabinet space, and enable proper access to the rear of the system. Installation requirements please refer the item details independently. RKS-02 Installation Guide: https://bit.ly/3loTF10 CMS-01 Installation Guide: https://bit.ly/3A7hGzE