Sony VGC-LV170J - Manual (Page 113)

113 n N
Using Peripheral Devices
!
Do not plug a telephone cable into the network (LAN) port on your computer.
If the network (LAN) port is connected to one of the telephone lines mentioned below, high electric current to the port may cause damage, overheating,
or fire.
- Home (intercom speakerphone) or business-use telephone lines (multi-line business telephone)
- Public telephone subscriber line
- PBX (private branch exchange)
Do not plug a telephone cable into the network (Ethernet) port.