Service set identifiers -- unique, case-sensitive identifiers that consist of up to 32 alphanumeric characters -- differentiate wireless local area networks from one another. An SSID can also be considered the network name of a WLAN. If you want to connect another computer in your home to your network but don't know the network name, you can find your WLAN's SSID on a PC or Mac that's already connected to the wireless network.
Click the Wireless Network Connection icon in the notification area.
Browse through the list of wireless networks, right-click the network labeled "Connected" and select "Status."
Review the information under the Connection section to find the network's SSID.
In OS X
Click the Apple logo from the menu bar and then click "System Preferences."
Click "Network," then "AirPort."
Review the information to the right of the Network Name field to find the SSID.
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