ASRock Z97 Extreme3 User Manual - Page 28
Expansion Slots (PCI and PCI Express Slots), PCIe Slot Configurations
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Z97 Extreme3 2.4 Expansion Slots (PCI and PCI Express Slots) There are 3 PCI slots and 3 PCI Express slots 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. PCI slots: PCI slots are used to install expansion cards that have the 32-bit PCI interface. PCIe slots: PCIE1 (PCIe 2.0 x1 slot) is used for PCI Express x1 lane width cards. PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards. PCIe Slot Configurations Single Graphics Card Two Graphics Cards in CrossFireXTM or SLITM Mode PCIE2 x16 x8 PCIE3 N/A x8 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. English 21
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