Enhance the functionality of your Era 100/300 speaker with the Sonos Combo Adapter; offering increased audio and networking options in a simple; easy-to-use design. Key Features: - USB-C powered adapter for Era 100/300 speakers - Provides female RJ45 Ethernet port for wired LAN connections - Features a 3.5mm female port for connecting wired audio devices - Compact and convenient design for easy use - Auxiliary and Ethernet cables not included What's in the Box: - Combo Adaptor - Black