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The Wi-Fi capabilities, formerly referred to as AirPort (802.11b) and AirPort Extreme (802.11g, 802.11a, 802.11n) capabilities, of each recent -- G3 and later -- Mac are listed below. For all Macs that match a specific version of Wi-Fi -- courtesy of EveryMac.com's Ultimate Mac Sort -- click the Wi-Fi capability of interest (right column).
Please note that AirPort is Apple's name for 802.11b, and AirPort Extreme is Apple's original name for 802.11g and 802.11n (some AirPort Extreme models also unofficially support 802.11a). Systems with "Optional" support AirPort wireless networking but did not have it pre-installed.
Please also be mindful of asterisks, as these indicate that particularly important details are provided on the complete specs page.
In addition to specs listed By Capability, EveryMac.com offers Apple Mac specs listed By Year, By Identifier, By Processor, By Case Type, and By Global Original Prices. Currently Shipping Macs also may be of interest.
If you are not sure which Mac you have, look it up by Order Number, Model Number, EMC Number, Model Identifier or Serial Number "Snippet," with EveryMac.com's Ultimate Mac Lookup feature. If you need help, refer to Mac Identification.