ASRock Z87M OC Formula - Manual (Page 24)

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Z87M OC Formula
2.4 Expansion Slots (PCI and PCI Express Slots)
There are 4 PCI Express slots, 1 mini-PCI Express slot, and 1 mSATA/mini-PCI
Express slot on this motherboard.
PCIe slots:
PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE2 (PCIe 2.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards.
PCIE4 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards.
MINI_PCIE1 (mini-PCIe slot) is used for WiFi module.
MINI_PCIE2 (mSATA/mini-PCIe slot) is used for mSATA or mini-PCIe module.
*** The mSATA/mini-PCIe slot is shared with SATA3_4 connector.
PCIe Slot Configurations
For a better thermal environment, please connect a chassis fan to the motherboard’s chassis
fan connector (CHA_FAN1 or CHA_FAN2) when using multiple graphics cards.
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.
PCIE1 PCIE3
Single Graphics Card x16 x8
Two Graphics Cards in
CrossFireX TM or SLI TM Mode
N/A x8