No expansion slot what does this mean?

Sithex

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May 7, 2014
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So i am very new to upgrading PC's I wanted to upgrade my GPU which was going to be a GTX 750 Ti. And now i'm looking to see if it can fit my motherboard. So I think I have a Pegatron 2AD4
( http://www.findlaptopdriver.com/pegatron-corp-2ad4-specs/ ).
And it says its a Mini-ITX, someone told me it means it has no expansion slot. Does this mean theres no room for a GPU do I need to upgrade my motherboard?