SUPER MICRO Computer I2DMR-8G2 user manual Connecting Cables

Chapter 2: Installation

2-5 Connecting Cables

EPS 12V Power

Connector

There are two 24-pin main power supply connector(J20, J36) on the i2DMR-8G2/i2DMR-iG2. These power connectors meet the SSI EPS 12V specification. (*Only one main power supply is needed.) See the table on the right for pin definitions.

EPS 12V Power Supply 24-pin Connectors:

J20,J36--Pin Definitions

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

Processor Power

Connectors

In addition to the primary SSI EPS12V 24-pin power connectors (above), there are also two 4-pin EPS 12V/15A power connectors to be connected to CPU Power Pods (VRMs). Refer to the table on the right for pin definitions.

Power Fail LED

The Power Fail LED connection is located on pins 5 and 6 of U66. Refer to the table on the right for pin definitions.

NMI Button

The non-maskable interrupt button header is located on pins 19 and 20 of U66. Refer to the table on the right for pin definitions.

EPS 12V Power Supply 4-pin Connectors:

Pin Definitions

Pin		Pin
Number Definition		Number Definition
1	Thru	2	Ground
3	Thru	4	+12V

Power Fail LED Pin

Definitions

(U66)

Pin

Number Definition

5Vcc

6GND

NMI Button Pin

Definitions (U66)

Pin	Definition
Number

19Control

20Ground

Power LED

The Power LED connection is lo- cated on pins 15 and 16 of U66. Refer to the table on the right for pin definitions.

PWR_LED Pin Definitions

(U66)

Pin	Definition
Number
15	Vcc
16	Control

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