Asus PRIME H270-PLUS Users manual ENGLISH - Page 16

PCI Express 3.0/2.0 x1 slots This motherboard has four PCI Express 3.0/2.0 x1 slots that support PCI Express x1 network cards, SCSI cards, and other cards that comply with the PCI Express specifications. PCI Express 3.0/2.0 x16 slots This motherboard supports two PCI Express 3.0/2.0 x16 graphic cards that comply with the PCI Express specifications. VGA configuration Single VGA/PCIe card Dual VGA/PCIe cards PCI Express operating mode PCIe 3.0 x16_1 (gray) PCIe 3.0 x16_2 x16 (Recommended for single VGA card) N/A x16 x4 • In single VGA card mode, use the PCIe 3.0 x16_1 slot (gray) for a PCI Express x16 graphics card to get better performance. • We recommend that you provide sufficient power when running CrossFireX™ mode. • Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2/3 when using multiple graphics cards for better thermal environment. IRQ assignments for this motherboard HD Audio Controller XHCI SATA Controller LAN Controller PCIEx1_1 PCIEx1_2 PCIEx1_3 PCIEx1_4 PCIEx16_1 PCIEx16_2 M.2_1 M.2_2 A shared shared shared shared - shared - - shared shared shared shared B shared - - - - - C shared - - - - D - - - - shared - - - - - - - When using PCI cards on shared slots, ensure that the drivers support "Share IRQ" or that the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable. 1-7 ASUS PRIME H270-PLUS