ASRock P45R2000-WiFi Quick Installation Guide - Page 18
Expansion Slots PCI and PCI Express Slots, English
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2.4 Expansion Slots (PCI and PCI Express Slots) There are 3 PCI slots and 4 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/DE (PCIE x1 slot; White) is used for PCI Express cards with x1 lane width cards, such as Gigabit LAN card, SATA2 card and ASRock PCIE_DE 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 x1 slot; White) is used for PCI Express cards with x1 lane width cards, such as Gigabit LAN card, SATA2 card, etc. PCIE4 (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 / PCIE4 / SLI/XFire Switch Card Retention Slot Configurations Single Graphics Card PCIE2 Slot PCIE4 Slot (Green) (Blue) PCIE x16 N/A SLI/XFire Switch Card Retention Slot (Default) Dual Graphics Cards in CrossFireTM Mode PCIE x8 PCIE x8 English 18 ASRock P45R2000-WiFi / P45R2000 / P45TurboTwins2000 Motherboard