hp omni 100 -6110ix pc

my computer doesn't support high graphic gaming, so i need a video card for it so anyone tell me some good video card for it

here is my pc : http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02806550&tmp_track_link=ot_faqs/top_issues/en_us/c02806550/loc:2&cc=us&dlc=en&lc=en&product=5099216

and here its motherboard: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02796581&tmp_track_link=ot_faqs/top_issues/en_us/c02796581/loc:1&cc=us&dlc=en&lc=en&product=5099216

And tell me where i have to insert video card or graphic card