Power Connectors

JPWR3 is the 24-pin power connector for ATX power source. JPWR1 (8-pin) and JPWR2 (8-pin) are the 12 V DC power connectors that provide power to the CPU in conjunction with JPWR3 or they can be used as the sole 12 V DC power inputs when JPWR3 is not in use.

ATX Power 24-pin Connection

Pin Definitions: 24 Total

Pin#

Definition

Pin#

Definition

13

+3.3 V

1

+3.3 V

14

No Connection

2

+3.3 V

15

GND

3

GND

16

PS_ON

4

+5 V

17

GND

5

GND

18

GND

6

+5 V

19

GND

7

GND

20

Res (No Connection)

8

PWR_OK

21

+5 V

9

+5 VSB

22

+5 V

10

+12 V

23

+5 V

11

+12 V

24

GND

12

+3.3 V

8-pin CPU Power

Pin Definitions: Eight Total

Pin#

Definition

1–4

GND

5–8

+12 V (12 V Power)