
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 |
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M440LX Server System Product Guide | 193 |