About this guideThis guide provides site preparation recommendations, step-by-step procedures for rack mounting and desk mounting, inserting modules,and connecting to a power source.CAUTION: To avoid electrostatic discharge (ESD) damage, wear grounding wrist straps when handling this equipment.WARNING: Only trained and qualified personnel can install this equipment. Read this guide before you install and power up thisequipment. This equipment contains two power cords. Disconnect both power cords before servicing.WARNING: This equipment contains optical transceivers, which comply with the limits of Class 1 laser radiation.Figure 1. Class 1 laser product tagWARNING: When no cable is connected, visible and invisible laser radiation may be emitted from the aperture of the opticaltransceiver ports. Avoid exposure to laser radiation and do not stare into open apertures.Regulatory• Marketing model S4248FB-ON is represented by the regulatory model E22W and the regulatory Type E22W001.• Marketing model S4248FBL-ON is represented by the regulatory model E22W and the regulatory Type E22W002.Topics:• Related documents• Information SymbolsRelated documentsFor more information about the S4200-ON Series (S4248FB-ON and S4248FBL-ON), see the following documents:• OS10 Enterprise Edition Release Notes• OS10 Enterprise Edition User Guide• S4200-ON Series Set-up Guide• Open Networking Hardware Diagnostic Guide• S4200-ON Series Release NotesNOTE: For the most recent documentation, visit Dell EMC support: www.dell.com/support.1About this guide 5