The S9300 uses Huawei's intelligent multilayer switching concept to provide high-performance L2/L3 switching services as well as rich network applications such as High-Definition (HD) video, elastic cloud computing, hardware IPv6, unified security, and H-QoS. This document describes hardware installation procedures of the S9300, S9300E, and S9300X series switches, troubleshooting methods for common hardware faults, and switch maintenance instructions. The figures in this document are for reference only. The S9300 series is available in S9303, S9306. Huawei S9300 Series Switch S9303 support 2*Main Control Units (MCUs), 3* Line Processing Units (LPUs), and AC or DC power modules in 1+1 backup mode Huawei S9300 Series Switch S9303 support 3 LPU slots, 2 MCU slots, 2 system power supply slots, and 1 PoE power supply slot The S9303 chassis is 4 U. Huawei's comprehensive portfolio of products and solutions enables you to realize smooth digital transformation and rapid growth of virtualization, Big Data, and cloud services. Huawei switches already help customers achieve success in industries such as finance, Internet, retail, education. Huawei S9303 Assembly Chassis is a high-performance networking solution designed for enterprise and data center environments. Ideal for IT administrators and procurement professionals looking. After more than 20 years of unremitting efforts and stable development, Huawei provides extensive experience in Ethernet switches. With multiple industry-leading intellectual properties and patents, Huawei provides more than a hundred switch models in more than 10 series, including access. S9300: Access product manuals, HedEx documents, product images and visio stencils.