ASROCK Rack C3558D4U-2OP, Руководство пользователя

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2.4 Expansion Slots (PCI Express Slots)
There are 2 PCI Express slots on this motherboard.
PCIE slots:
PCIE6 (PCIE 3.0 x8 slot) is used for PCI Express x8 lane width cards.
PCIE7 (PCIE 3.0 x4 slot) is used for PCI Express x4 lane width cards.
Slot Generation Mechanical Electrical Source
PCIE 6 3.0 x8 x8 CPU
PCIE 7 3.0 x4 x4 CPU
Installing an expansion card
Step 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.
Step 2. Remove the system unit cover (if your motherboard is already installed
in a chassis).
Step 3. Remove the bracket facing the slot that you intend to use. Keep the
screws for later use.
Step 4. Align the card connector with the slot and press firmly until the card is
completely seated on the slot.
Step 5. Fasten the card to the chassis with screws.
Step 6. Replace the system cover.