SUPER MICRO Computer X8STI-LN4, X8STI-F Connecting Cables, ATX Main PWR & CPU PWR Connectors

Chapter 2: Installation

2-6 Connecting Cables

This section provides brief descriptions and pin-out definitions for onboard headers and connectors. Be sure to use the correct cable for each header or connector.

•For information on Backpanel USB and Front Panel USB ports, refer to Page 2-14.

•For information on COM Port 1 and COM Port 2, please see Page 2-16.

ATX Power 24-pin Connector

Pin Definitions (JPW1)

ATX Main PWR & CPU PWR Connectors

The 24-pin main power connector (JPW1) is used to provide power to the motherboard. The 8-pin CPU PWR connector (JPW2) is also required for the processor. These power connec- tors meet the SSI EPS 12V specifica- tion. See the table on the right for pin definitions.

Pin# Definition

13+3.3V

14-12V

15COM

16PS_ON

17COM

18COM

19COM

20Res (NC)

21+5V

22+5V

23+5V

24COM

Pin # Definition

1+3.3V

2+3.3V

3COM

4+5V

5COM

6+5V

7COM

8PWR_OK

95VSB

10+12V

11+12V

12+3.3V

AB

12V 8-pin Power Connec-

tor Pin Definitions

Pins	Definition
1 through 4	Ground
5 through 8	+12V

(Required)

A.24-Pin ATX Main PWR

B.8-Pin Processor PWR

NIC4 LED

JBMC1

LSI 1068E

2-21