ASROCK H97M Anniversary Manual De Instrucciones página 18

2.4 Expansion Slots (PCI Express Slots)
There are 3 PCI Express slots on the motherboard.
1. 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.
2. Due to the mechanical limitation, to install/uninstall the graphics card on PCIE1
slot, please find a thin tool, such as a pen to press the retaining clip to lock/unlock
the PCIe slot.
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 2.0 x1 slot) is used for PCI Express x1 lane width cards.
16