SUPER MICRO Computer AS1020S-8 Connector Definitions, Primary ATX Power Connector, NMI Button

AS1020S-8 User's Manual

5-9 Connector Definitions

Primary ATX Power

Connector

The main power supply connector on the H8DSR-8 (J1B4) meets the SSI (Superset ATX) specification. You can only use a 20-pin power supply cable on the serverboard. Make sure that the orientation of the connector is correct. You must also use the processor power connector (JPW2, below.) See the table on the right for pin defi nitions.

Processor Power Connector

The header at JPW2 must also be connected to the power supply to provide power for the processor(s). See the table on the right for pin defi nitions.

ATX Power 20-pin Connector

Pin Definitions (J1B4)

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

Required Connection

Processor Power

Pin Definitions (JPW2)

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

Required Connection

Secondary Power

Connection

In addition to the Primary ATX power connector (above), a Secondary 12v 4-pin connector (J32) has been included for use with heavy-load sys- tems. See the table on the right for pin defi nitions.

Secondary Power

Pin Definitions (J32)

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

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.

NMI Button

Pin Definitions (JF1)

Pin# Defi nition

19Control

20Ground

5-12