EVGA 122-CK-NF63-TR User Manual - Page 69

Power Connections

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Installing and Configuring the EVGA nForce 680i SLI Motherboard Power Connections This motherboard requires an ATX power supply. To support a PCI Express motherboard with the addition of dual graphics cards using NVIDIA SLI technology, you are going to need a minimum of a 500W power supply. Make sure you have enough power to cover all the expansion cards you will be installing. To determine what you power requirements are for your specific configuration, refer to www.SLIzone.com. 24-pin ATX Power (PWR1) PWR1 is the main power supply connector located along the edge of the board next to the DIMM slots. Make sure that the power supply cable and pins are properly aligned with the connector on the motherboard. Firmly plug the power supply cable into the connector and make sure it is secure. Figure 3. Table 1. PWR1 Motherboard Connector PWR1 Pin Assignments PWR1 connector Plug power cable from system power supply to PWR1 Connector 24 12 Pin Signal Pin Signal 1 +3.3V 13 +3.3V 13 2 +3.3V 14 -12V 3 GND 15 GND 4 +5V 16 PS_ON 5 GND 17 GND 1 6 +5V 18 GND 7 GND 19 GND 8 PWROK 20 RSVD 9 +5V_AUX 21 +5V 10 +12V 22 +5V 11 +12V 23 +5V 12 +3.3V 24 GND 18

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Installing and Configuring the EVGA nForce 680i SLI Motherboard
18
Power Connections
This motherboard requires an ATX power supply. To support a PCI Express
motherboard with the addition of dual graphics cards using NVIDIA SLI
technology, you are going to need a minimum of a 500W power supply.
Make
sure you have enough power to cover all the expansion cards you will be
installing. To determine what you power requirements are for your specific
configuration, refer to
www.SLIzone.com
.
24-pin ATX Power
(PWR1)
PWR1
is the main power supply connector located along the edge of the board
next to the DIMM slots. Make sure that the power supply cable and pins are
properly aligned with the connector on the motherboard. Firmly plug the power
supply cable into the connector and make sure it is secure.
Figure 3.
PWR1 Motherboard Connector
Table 1.
PWR1 Pin Assignments
Connector
Pin
Signal
Pin
Signal
1
+3.3V
13
+3.3V
2
+3.3V
14
-12V
3
GND
15
GND
4
+5V
16
PS_ON
5
GND
17
GND
6
+5V
18
GND
7
GND
19
GND
8
PWROK
20
RSVD
9
+5V_AUX
21
+5V
10
+12V
22
+5V
11
+12V
23
+5V
24
13
12
1
12
+3.3V
24
GND
PWR1
connector
Plug power cable
from system power
supply to PWR1