Archer T4U TP-LINK Wireless USB Adapter User Guide
Figure 3-22
4.If the network is security-enabled, you will be prompted to enter the key as shown below. If not, you will connect to the network directly without entering a key.
Figure 3-23
3.3.2 In Windows 7
Windows 7 users may use the built-in wireless utility. Follow the steps below.
1.Left-click the wireless icon 
in your system tray (lower-right corner). The utility will display any available wireless networks in your area. Highlight the wireless network (displayed using the SSID) to be connected and then click Connect.
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