Is this Wireless Adapter the one installed by factory?
Yes , its the one installed in factory
Since this adapter is OEM's, we recommend that you contact your computer maufacturer first: Computer Manufacturer Support in order to obtain the latest drivers provided by them. If you have done so and the issue still persists, you can follow the steps below as a second option.
2. Go to Control Panel, Programs and Features and Uninstall "Intel® PROSet/Wireless Software", if it is installed. When prompted, choose the option to "Discard settings".
3. In Control Panel, Device Manager, Network Adapters, right click on the Intel® Centrino® Wireless-N 2230 and Uninstall it. Make sure you mark the option to "Delete the driver software for this device".
4. Reboot the PC or scan for hardware changes, check device manager and if an older driver is detected and installed, repeat the actions to uninstall and delete it as well. Repeat this process until the OS does not allow deleting the driver, or until the controller shows as Unknown Device.
5. Install the Intel® Wireless driver. During the first steps of PROSet/Wireless installation, make sure to customize the installation and install all the 3 driver components