Hardware Installation

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 or a certified power supply vendor, 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.

PWR1 connector

Plug power cable from system power supply to PWR1

Card edge

Figure 4. PWR1 Motherboard Connector

Table 1. PWR1 Pin Assignments

Connector

 

Pin

Signal

 

 

1

+3.3V

24

13

2

+3.3V

 

 

3

GND

 

 

4

+5V

12

 

5

GND

 

6

+5V

 

 

 

 

7

GND

 

 

8

PWROK

 

 

9

+5V_AUX

 

 

10

+12V

 

 

11

+12V

Pin

Signal

13

+3.3V

14

-12V

15

GND

16

PS_ON

17

GND

18

GND

19

GND

20

RSVD

21

+5V

22

+5V

23

+5V

NVIDIA Corporation

October 17, 2007 DU-03597-001_v01

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Nvidia 780I SLI manual Pin ATX Power PWR1, PWR1 Motherboard Connector PWR1 Pin Assignments