Communications Network All notebook models ship with an RJ-45 network jack. A network cable with RJ-45 connectors at each end is included with select models. The notebook can be connected to a network whether or not the internal modem is connected to a telephone line. If your notebook is connected to a network, you may want to confer with your network administrator before changing network settings. The notebook supports network speeds up to 10 Mbps when connected to a 10BaseT network and 100 Mbps when connected to a 100BaseTX network. 7–10 Startup and Reference Guide—Part 2