Category Documents PurposesInterface Card User Manual Describes the appearance and specifications of theinterface card.S5120-EI Series EthernetSwitches Installation ManualProvides a complete guide to hardware installationand hardware specifications.Provides regulatory information and the safetyinstructions that must be followed during installation.Pluggable SFP[SFP+][XFP]Transceiver Modules InstallationGuideGuides you through installing SFP/SFP+/XFPtransceiver modules.HardwareinstallationInterface Card User Manual Describes how to install the interface card.Configuration guides Describe software features and configurationprocedures.SoftwareconfigurationCommand references Provide a quick reference to all available commands.H3C Series Ethernet SwitchesLogin Password RecoveryManualTells how to find the lost password or recover thepassword when the login password is lost.Operations andmaintenanceRelease notesProvide information about the product release,including the version history, hardware and softwarecompatibility matrix, version upgrade information,technical support information, and softwareupgrading.Obtaining DocumentationYou can access the most up-to-date H3C product documentation on the World Wide Web athttp://www.h3c.com.Click the links on the top navigation bar to obtain different categories of product documentation:[Technical Support & Documents > Technical Documents] – Provides hardware installation, softwareupgrading, and software feature configuration and maintenance documentation.[Products & Solutions] – Provides information about products and technologies, as well as solutions.[Technical Support & Documents > Software Download] – Provides the documentation released withthe software version.Documentation FeedbackYou can e-mail your comments about product documentation to info@h3c.com.We appreciate your comments.