Accelerated graphics port slot, Pci add-on slots, 5 accelerated graphics port slot -13 – Abit SG-80DC User Manual
Page 21: 6 pci add-on slots -13, Hardware setup

Hardware Setup
SG-80DC
2-13
2.5.5 Accelerated Graphics Port Slot
This slot supports an optional AGP graphics card up to AGP 8X/4X mode.
※ This motherboard does not support 3.3V AGP cards. Use only 1.5V or 0.8V AGP
cards.
2.5.6 PCI Add-on Slots
These slots provide the connection of add-on cards that comply with PCI specifications.