Sony PCG-GRX500 VAIO User Manual page 57

Notes on using Wireless LAN
 Sony Wireless LAN devices support the IEEE 802.11b standard. Devices connecting to a Wireless LAN using the IEEE
802.11a standard cannot connect to devices using the IEEE 802.11b standard.
 Wireless LAN communication occurs on divided frequency bands known as channels. Third-party Wireless LAN Access
Point channels may be preset to different channels from Sony devices.
If using a Wireless LAN Access Point, refer to connectivity information contained in those instructions.
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