Backplane to System Board Control Connections

Connector J2 on the backplane connects I2C, remote sense, and power supply controls to the system board.

Pin

Connector Designator

Description

1

RS GND

Remote sense ground (-)

2

+5 V RS

+5 VDC remote sense (+)

3

+3.3 V RS

+3.3 VDC remote sense (+)

4

GND

Ground

5

I2C-SCL

I²C serial clock

6

I2C-SDA

I²C serial data

7

GND

Ground

8

PGOOD

Power good indication

9

PON

Power ON control

10

GND

Ground

11

+5 V Stdby

+5 VDC standby

12

NC

Key

13

+24 V

+24 VDC

14

24 V RTN

24 VDC return

 

 

 

Power Supply Input Voltages

The server may contain one, two, or three autoranging 360 watt power supplies that are designed to minimize EMI and RFI. The input voltage ranges are

100-120 VAC at 50/60 Hertz (Hz); 6.0 A maximum current

200-240 VAC at 50/60 Hz; 3.0 A maximum current

170

Chapter 7 Power System

Page 170
Image 170
Intel MB440LX manual Power Supply Input Voltages, Backplane to System Board Control Connections