Buy ZOTAC EITX-B-U AMD E w/WIFI Mini-ITX Motherboard and much more at SabrePC. You will need a new bios chip for the following purposes As a backup chip in case the current BIOS Chip is corrupt. As a BIOS upgrade chip for advanced. Zotac EITX Manual Online: Advanced Menu, Acpi Settings, Cpu Configuration. The Advanced Menu Items Allow You To Change The Setting For The CPU.