ASRock A780GXE/128M Quick Installation Guide - Page 16
English, 4 Expansion Slots PCI and PCI Express Slots
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2.4 Expansion Slots (PCI and PCI Express Slots) There are 3 PCI slots and 3 PCI Express slots on this motherboard. PCI Slots: PCI slots are used to install expansion cards that have the 32-bit PCI interface. PCIE Slots: PCIE1 (PCIE x1 slot; Green) is used for PCI Express cards with x1 lane width cards, such as Gigabit LAN card and SATA2 card. PCIE2 (PCIE x16 slot; Green) is used for PCI Express x16 lane width graphics cards, or used to install PCI Express graphics cards to support CrossFireTM function. PCIE3 (PCIE x16 slot; Blue) is used for PCI Express x1 lane width cards, such as Gigabit LAN card, SATA2 card, etc., or used to install PCI Express graphics cards to support CrossFireTM function. PCIE2 / PCIE3 / SLI/XFire Switch Card Retention Slot Configurations PCIE2 Slot PCIE3 Slot SLI/XFire Switch Card (Green) (Blue) Retention Slot Single Graphics Card PCIE x16 PCIE x1 (Default) Dual Graphics Cards PCIE x8 in CrossFireTM Mode PCIE x8 English 16 ASRock A780GXE/128M Motherboard