Nvidia 400 - Manual (Page 22)

Installation
Page 3-6
AGP Card Installation Caution
3-4 Expansion Slots
AGP Slot
The mainboard is equipped with an AGP
slot. Make sure you install a card that
supports the 1.5V specification.
PCI Slots
The mainboard is equipped with 6 PCI
slots.
PCI Slots
AGP Slot
When installing the AGP card make sure the AGP card edge
connector is inserted fully into the slot and the slot clicker is locked.