Dell Inspiron 5160 - Manual (Page 51)

Setting Up a Home and Office Network
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3 From the Network Authentication drop-down menu, select Open.
Earlier versions of Dell wireless network software may not contain the drop-down menu. If
you are using an earlier version, click to check the Data encryption (WEP enabled) check box
and go to step 5.
4 From the Data encryption drop-down menu, select WEP.
5 If the wireless network does not require a network key, such as a password, go to step 9.
6 Click to uncheck the The key is provided for me automatically check box.
7 Enter the WEP network key in the Network key field.
8 Enter the WEP network key again in the Confirm network key field.
NOTE:
Your computer can take up to 1 minute to connect to the network.
9 Click OK.
Your network setup is complete.