Problem installing the board UNO SMD R3 on Windows 8.1

I bought an Arduino UNO SMD R3 board which i cant install on my laptop operating Windows 8.1. I tried to follow the steps of “Getting Started with Arduino on Windows” section from the Arduino website but the instructions seems different from windows 8.1 view.

In the instruction it is written that while driver installation from Device Manager of my Laptop there should be an option:
<Look under Ports (COM & LPT). You should see an open port named “Arduino UNO (COMxx)”. If there is no COM & LPT section, look under “Other Devices” for “Unknown Device”>
But i found no such option there. i’m attaching a photo of my device manager here.

Helpful reply is appreciated.

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