Sony VGN-FZ200 - Manual (Page 66)

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Using Your VAIO Computer
Stopping Wireless LAN Communication
To stop wireless LAN communication
Turn off the WIRELESS or WIRELESS LAN switch.
!
Turning off the wireless LAN functionality while accessing remote documents, files, or resources may result in data loss.
✍
For WPA-PSK or WPA2-PSK authentication, you must enter a passphrase. The passphrase is case sensitive and must be between 8 and 63
alphanumeric characters long or up to 64 characters long using numbers from 0 to 9 and letters from A to F.