ASRock Z77 Extreme9 User Manual - Page 25
Expansion Slots PCI Express Slots
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2.6 Expansion Slots (PCI Express Slots) There are 7 PCI Express slots and 1 mini-PCI Express slot on this motherboard. PCIE slots: PCIE1 / PCIE5 (PCIE 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards, or to install PCI Express graphics cards to support CrossFireXTM or SLITM function. PCIE3 / PCIE7 (PCIE 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards, or to install PCI Express graphics cards to support CrossFireXTM or SLITM function. PCIE2 (PCIE 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. PCIE4 (PCIE 2.0 x16 slot) is used for PCI Express x4 lane width graphics cards or ASRock Game Blaster. PCIE6 (PCIE 2.0 x1 slot) is used for a PCI Express x1 lane width card, such as a Gigabit LAN card, SATA2 card, etc. MINI_PCIE1 (mini-PCIE slot) is used for WiFi + BT module. PCIE Slot Configurations Single Graphics Card Two Graphics Cards in CrossFireXTM or SLITM Mode Three Graphics Cards in 3-Way CrossFireXTM or 3-Way SLITM Mode Four Graphics Cards in 4-Way CrossFireXTM or 4-Way SLITM Mode PCIE1 N/A x16 x8 x8 PCIE2 x16 N/A N/A N/A PCIE3 N/A N/A x8 x8 PCIE5 N/A x16 x16 x8 PCIE7 N/A N/A N/A x8 25