Sony VGN-FS550 - Manual (Page 156)

Can I connect to an IEEE 802.11a device?
Only computers with IEEE 802.11a standard capabilities can connect to an IEEE 802.11a device. Computers with IEEE
802.11b and IEEE 802.11g standard capabilities are not IEEE 802.11a compatible. Refer to the VAIO
® Specifications for
information about your computer's wireless capabilities.
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