ASROCK M3A790GXH/128M User Manual download pdf (Page 20)

2020

2.4 Expansion Slots (PCI and PCI Express Slots)2.4 Expansion Slots (PCI and PCI Express Slots)

2.4 Expansion Slots (PCI and PCI Express Slots)

There are 2 PCI slots and 4 PCI Express slots on this motherboard.

PCI Slots: PCI slots are used to install expansion cards that have the 32-bit PCI

interface.

PCIE Slots: PCIE1 (PCIE x1 slot; Green) is used for PCI Express cards with x1 lane

width cards, such as Gigabit LAN card and SATA2 card.

PCIE2 (PCIE x16 slot; Green) is used for PCI Express x16 lane width

graphics cards, or used to install PCI Express graphics cards to support

CrossFireX

function.

PCIE3 (PCIE x16 slot; Blue) is used to install PCI Express graphics

cards to support CrossFireX

function.

PCIE4 (PCIE x16 slot; Orange) is used for PCI Express x1 lane width

cards, such as Gigabit LAN card, SATA2 card, etc., or used to install PCI

Express graphics cards to support 3-Way CrossFireX

function.

1. If you plan to install only one PCI Express VGA card on this

motherboard, please install it on PCIE2 slot (Green). In this mode,

you do not need to adjust the default setting of ASRock SLI/XFire

Switch Card, and please do not remove or lose ASRock SLI/XFire

Switch Card when it is still in working condition.

PCIE2 slot

(x16 or x8 mode)

PCIE3 slot

(x8 mode)

PCIE4 slot

(x4 mode)

PCIE1 slot

(x1 mode)

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ASROCK M3A790GXH/128M User Manual Page 20