The Zotac IONITX-A-U is a motherboard + cpu + graphics combination that is perfectly suited to meet most HTPC needs: It uses very little power. The Zotac IONITX-A-U ION Motherboard. Zotac's new line of ION motherboards are all based on a mini-ITX design (about in x in) and. If you definitely fit the bill here, it's worth taking a gander at Zotac's recently released IONITX-A motherboard. As the first of its breed to actually.