Gigabyte GA-8ITX User Manual page 2

When you installing AGP card, please make sure the
following notice is fully understood and practiced. If your
AGP card has "AGP 4X notch"(show below), please make
sure your AGP card is AGP 4X (1.5V).
Do not use AGP 2X card (3.3V) in this motherboard. It will
burn and damage the motherboard due to Intel
can't support AGP 2X(3.3V).
Example 1: Diamond Vipper V770 golden finger is compatible
with 2X/4X mode AGP slot. It can be switched between AGP 2X
(3.3V) or 4X(1.5V) mode by adjusting the jumper. The factory
default for this card is 2X(3.3V). If you install this card in GA-8ITX
series (or any AGP 4X only) motherboards without switching the
jumper to 4X mode (1.5V), it will burn the motherboard.
Example 2: ATi Rage 128 Pro (Power Color) & SiS 305 golden
finger is compatible with 2X/4X mode AGP slot, but it supports
2X(3.3V) only. If you install this card in GA-8ITX series (or any
AGP 4X only) motherboards, it will burn the motherboard.
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850 chipset