MSI Megabook M645 Getting Started page 37

M645
USB devices without turning off the computer.
5. RJ-45 Connector
The 100/10 Ethernet connector is used to connect a LAN cable for network
connection.
6. RJ-11 Connector
The computer provides a built-in modem that allows you to connect an
FJ-11 telephone line through this connector. With the 56K V.90 modem,
you can make a dial-up connection.
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Getting Started