Asus Z87M-PLUS - Expansion Slots

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Chapter 1: Product introduction
Chapter 1
1.2.5 Expansion slots
Unplug the power cord before adding or removing expansion cards. Failure to do so may
cause you physical injury and damage motherboard components.
Slot No. Slot Description
1 PCIe 3.0/2.0 x16_1 slot (at x16 mode)
2 PCIe 2.0 x1_1 slot
3 PCIe 2.0 x1_2 slot
4 PCIe 2.0 x16_2 slot (run at x4 mode, compatible with PCIe x1 and x4 devices)
Z87M-PLUS
PCIEX16_1
PCIEX16_2
PCIEX1_1
PCIEX1_2