SUPER MICRO Computer AS 1020C-3 user manual Connector Definitions, ATX Power Connector, NMI Button

AS1020C-3 User's Manual

5-9 Connector Definitions

ATX Power Connector

The primary ATX power supply con- nector (J1B4) meets the SSI (Super- set ATX) 24-pin specifi cation. Refer to the table on the right for the pin defi ni- tions of the ATX 24-pin power connec- tor. This connection supplies power to the chipset, fans and memory.

Note: You must also connect the 8- pin (JPW1) and 4-pin (PW3) power connectors to your power supply (see below).

ATX Power 24-pin Connector

Pin Definitions (J1B1)

Pin#	Defi nition	Pin #	Defi nition
13	+3.3V	1	+3.3V
14	-12V		+3.3V
		2
15	COM		COM
		3
16	PS_ON		+5V
		4
17	COM		COM
		5
18	COM		+5V
		6
19	COM		COM
		7
20	Res (NC)		PWR_OK
		8
21	+5V		5VSB
		9
22	+5V	10	+12V
23	+5V	11	+12V
24	COM	12	+3.3V

Processor Power Connector

In addition to the primary ATX power connector (above), the 12v, 8-pin processor power connector at JPW2 must also be connected to your power supply. This connection supplies power to the CPUs. See the table on the right for pin defi nitions.

Auxiliary Power Connector

The 4-pin auxiliary power connector at J32 must also be connected to your power supply. This connection sup- plies extra power that may be needed for high loads. See the table on the right for pin defi nitions.

NMI Button

The non-maskable interrupt button header is located on pins 19 and 20 of JF1. Refer to the table on the right for pin defi nitions.

Processor Power

Connector

Pin Definitions (JPW2)

Pins	Defi nition
1 through 4	Ground
5 through 8	+12V

Required Connection

Auxiliary Power

Connector

Pin Definitions (J32)

Pins	Defi nition
1 & 2	Ground
3 & 4	+12V

Required Connection

NMI Button

Pin Definitions (JF1)

Pin# Defi nition

19Control

20Ground

5-12