All players (except for some very early models) also have
Ethernet / LAN ports for wired
connection to a home network and the internet (most players also have built - in WiFi), and Blu - ray Disc players usually have either one or two USB ports that can be used to load firmware updates, and / or provide for one or more of the following: BD - Live memory expansion (which provides access to additional online - based content that is associated with
specific Blu - ray Disc titles), access to digital media files stored on flash drives, or provide for the
connection of a USB WiFi adapter for players that do not have WiFi built - in already.