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When I installed Ubuntu 12.04 on a Dell Inspiron E1505, the USB is not detected. During installation, the system asked if I wanted to connect to wireless USB "Real Tec" but not my network. I believe the "Real Tec" to be the USB. This is a new USB which I purchased from Think Penguin.

Now that the install is complete, wireless networking is not an option on the menu.

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The problem is you probably disabled the wireless using a hardware switch. There are certain keys like FN + F1-F12 which may do this.

There is also possibly of an on/off switch. However, most likely the switch is defective and you have permanently disabled the wireless (including USB).

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