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1.5.6 PCI Express 3.0/2.0 x16 slot This motherboard has a PCI Express 3.0/2.0 x16 slot that supports PCI Express 3.0/2.0 x16 graphic cards complying with the PCI Express specifications. VGA configuration PCI Express operating mode PCIe 3.0/2.0 x16_1 (gray) PCIe 2.0 x16_2 Single VGA/PCIe card x16 (Recommended for single VGA card) N/A Dual VGA/PCIe card x16 x2 • In single VGA card mode, use the PCIe 3.0/2.0 x16_1 slot (gray) for a PCI Express x16 graphics card to get better performance. • We recommend that you provide sufficient power when using multiple graphics cards. See page 1-19 for details. • Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when using multiple graphics cards for better thermal environment. IRQ assignments for this motherboard A B C D E F G H shared – – – – – – – HD Audio – – – – – – shared – EHCI 1 EHCI 2 XHCI SATA LAN – – – – – – – – – – – – – – – – shared shared – – – – – – – shared – – – – PCIEx16_1 shared – – – – – PCIEx16_2 PCIEx1_1 PCIEx1_2 PCI_1 PCI_2 Asmedia U3.1 shared – – – shared – shared – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – I.G.D. ASUS Z97-K/USB 3.1 – – – – – – – shared shared – – – – – shared – – shared – shared – – – – – – 1-11
