Server Management Connector

Pin

Signal

Description

1

SMI_L (input)

System management interrupt

2

I2CCLK (output

I2C clock (8 MHz)

3

GND (power)

Electrical ground

4

KEY

No connection, pin missing

5

PWROFF_L (output)

Power supply off

6

I2CDATA (I/O)

I2C data signal

7

LPOK (input)

Host line power okay

8

KEYUNLK (input)

Keyboard unlock (not used)

9

NMI (input)

Nonmaskable interrupt

10

+3.3 V (input)

+3.3 V power

11

RESET_L (output)

Reset system board

12

GND (power)

Electrical ground

13

GND (power)

Electrical ground

14

KEY

No connection, pin missing

15

SECURE (input)

Host in secure mode

16

GND (power)

Electrical ground

17

INTRUD (input)

Chassis is open

18

RESERVERED

No connection, reserved for future use

19

KEY

No connection, pin missing

20

GND (power)

Electrical ground

 

 

 

M440LX Server System Product Guide

193

Page 193
Image 193
Intel MB440LX manual Server Management Connector, 193, Pin Signal Description