ASRock Z270 Taichi Quick Installation Guide - Page 23
Expansion Slots PCI and PCI Express Slots
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Z270 Taichi 2.4 Expansion Slots (PCI and PCI Express Slots) There are 5 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. PCIe slots: PCIE1 (PCIe 3.0 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 x4 lane width graphics cards. PCIE4 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards. PCIE5 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards. PCIe Slot Configurations Single Graphics Card PCIE2 x16 PCIE4 N/A PCIE5 N/A Two Graphics Cards in CrossFireXTM or SLITM x8 Mode x8 N/A Three Graphics Cards in 3-Way CrossFireXTM Mode x8 x4 x4 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