ASRock B250M Pro4 Quick Installation Guide - Page 20

Expansion Slots PCI and PCI Express Slots

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2.4 Expansion Slots (PCI and PCI Express Slots) There is 1 PCI slot and 3 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. PCI slot: The PCI1 slot is used to install expansion cards that have 32-bit PCI interface. PCIe slots: PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards. PCIE2 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards. PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards. PCIe Slot Configurations PCIE1 PCIE3 Single Graphics Card x16 N/A Two Graphics Cards in CrossFireXTM Mode x16 x4 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. English 18

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18
English
2.4
Expansion Slots (PCI and PCI Express Slots)
Tere is 1 PCI slot and 3 PCI Express slots on the motherboard.
PCI slot:
Te PCI1 slot is used to install expansion cards that have 32-bit PCI interface.
PCIe slots:
PCIE1 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE2 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards.
PCIe Slot Confgurations
²or a better thermal environment, please connect a chassis Fan to the motherboard’s
chassis Fan connector (CHA_²AN1 or CHA_²AN2) when using multiple graphics
cards.
BeFore installing an expansion card, please make sure that the power supply is
switched o³ 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
N/A
Two Graphics Cards in
CrossFireX
TM
Mode
x16
x4