ASRock Fatal1ty X99 Professional/3.1 User Manual - Page 27
Expansion Slots PCI Express Slots
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Fatal1ty X99 Professional/3.1 Series 2.4 Expansion Slots (PCI Express Slots) There are 5 PCI Express slots and 1 mini-PCI Express slot on the motherboard. Before installing an expansion card, please make sure that the power supply is switched off or the power cord is unplugged. Please read the documentation of the expansion card and make necessary hardware settings for the card before you start the installation. mini-PCIe slots: MINI_PCIE1 (mini-PCIe slot) is used for WiFi module. PCIe slots: PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards. PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width cards, such as Thunderbolt™ add-in card. PCIE4 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. PCIE5 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards. PCIe Slot Configurations (For CPU with 40 PCIe lanes) PCIE1 PCIE2 PCIE3 Single Graphics Card x16 N/A N/A PCIE4 N/A PCIE5 N/A Two Graphics Cards in CrossFireXTM or SLITM Mode x16 N/A N/A x16 N/A Three Graphics Cards in 3-Way CrossFireXTM Mode x8 or 3-Way SLITM Mode x8 N/A x16 N/A Four Graphics Cards in 4-Way CrossFireXTM Mode x8 x8 N/A x8 x8 or 4-Way SLITM Mode For a better thermal environment, please connect a chassis fan to the motherboard's chassis fan connector (CHA_FAN1, CHA_FAN2 or CHA_FAN3) when using multiple graphics cards. 19 English