ASRock Z87 OC Formula manual Expansion Slots PCI and PCI Express Slots, Pcie Slot Configurations

Z87 OC Formula/ac / Z87 OC Formula

2.4 Expansion Slots (PCI and PCI Express Slots)

There are 6 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.

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 2.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE4 (PCIE 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards. PCIE5 (PCIE 2.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE6 (PCIE 2.0 x16 slot) is used for PCI Express x4 lane width graphics cards.

mini-PCIe slots:

MINI_PCIE1 (mini-PCIe slot) is used for WiFi module.

PCIE Slot Configurations

	PCIE1	PCIE2	PCIE4	PCIE6
Single Graphics Card	x16	N/A	N/A	N/A
Two Graphics Cards in	x8	N/A	x8	N/A
CrossFireXTM or SLITM Mode
Three Graphics Cards in	x8	x4	x4	N/A
3-Way CrossFireXTM Mode
Four Graphics Cards in	x8	x4	x4	x4
4-Way CrossFireXTM Mode

For a better thermal environment, please connect a chassis fan to the motherboard’s chas- sis fan connector (CHA_FAN1, CHA_FAN2, CHA_FAN3 or CHA_FAN4) when using multiple graphics cards.

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