Asrock A75 Pro4 用户手册

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2.4  Expansion Slots (PCI and PCI Express Slots)

There are 3 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 / PCIE3 (PCIE x1 slot; White) is used for PCI Express cards with 
x1 lane width cards, such as Gigabit LAN card and SATA2 card.

 

PCIE2 (PCIE x16 slot; Blue) is used for PCI Express x16 lane width 
graphics cards, or used to install PCI Express graphics cards to support 
CrossFireX

TM

 function.  

 

PCIE4 (PCIE x16 slot; Blue) is used for PCI Express x4 lane width 
cards, or used to install PCI Express graphics cards to support 

 CrossFireX

TM

 function.

1.   In single VGA card mode, it is recommended to install a PCI Ex-

press x16 graphics card on PCIE2 slot. 

2.   In  CrossFireX

TM

 mode, please install PCI Express x16 graphics 

cards on PCIE2 and PCIE4 slots.  

3.  Please connect a chassis fan to motherboard chassis fan connec-

tor (CHA_FAN1, CHA_FAN2 or CHA_FAN3) when using multiple 
graphics cards for better thermal environment.

Installing an expansion card

 

Step 1. 

Before installing the 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   rmly 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.