EVGA 122-CK-NF68-XX ユーザーズマニュアル

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Installing and Configuring the EVGA nForce 680i SLI Motherboard 
 
 
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PCI Express x1 Slot 
There is two PCI Express x1 slots that are designed to accommodate less 
bandwidth-intensive cards, such as a modem or LAN card. The x1 slot provides 
250 MB/sec bandwidth. 
PCI Express x16 Slots 
These two PCI Express x16 slots are reserved for graphics or video cards. The 
bandwidth of the x16 slot is up to 4GB/sec (8GB/sec concurrent). The design 
of this motherboard supports dual PCI-Express graphics cards using NVIDIA’s 
SLI technology with multiple displays.  
When installing a PCI Express x16 card, be sure the retention clip snaps and 
locks the card into place. If the card is not seated properly, it could cause a 
short across the pins. Secure the card’s metal bracket to the chassis back panel 
with the screw used to hold the blank cover. 
Jumper Settings 
The motherboard contains a 3-pin BIOS configuration jumper that enables all 
board configurations to be done in the BIOS Setup program.  
The silk screen on the motherboard shows a ∆ next to pin 1. 
Clear CMOS Jumper: CLR_CMOS 
The motherboard uses the CMOS RAM to store all the set parameters. The 
CMOS can be cleared by removing the CMOS jumper. 
Use the following procedure to clear CMOS: 
1.  Turn off the AC power supply and connect pins 1 and 2 together using the 
jumper cap. 
2.  Return the jumper setting to normal (pins 2 and 
3.  Together with the jumper cap). 
4.  Turn the AC power supply back on.