SMBus Header
The header at SMBus is for the System Management Bus. Connect the appropriate cable here to utilize SMB on the system. See the table on the right for pin definitions.
SMBus Header
(SMBus)
Pin Definitions
(JSMB1)
Pin# Definition
1Data
2Ground
3Clock
4No Connection
Power I2C
The JPI2C1 header is for power I2C, which may be used to monitor the status of the power supply, fan and system temperature. See the table on the right for pin definitions.
Power I2C
Pin Definitions
(JPI2C)
Pin# Definition
1Data
2Ground
3Clock
4NC
ATX PS/2 Keyboard and PS/2 Mouse Ports
The ATX PS/2 keyboard and PS/2 mouse are located next to the Back Panel USB Ports 0~3 on the motherboard. See the table at right for pin definitions.
PS/2 Keyboard/Mouse Pin
Definitions
PS2 Keyboard | PS2 Mouse | ||
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Pin# | Definition | Pin# | Definition |
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1 | KB Data | 1 | Mouse Data |
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2 | No | 2 | No |
| Connection |
| Connection |
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3 | Ground | 3 | Ground |
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4 | Mouse/KB | 4 | Mouse/KB |
| VCC (+5V) |
| VCC (+5V) |
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5 | KB Clock | 5 | Mouse Clock |
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6 | No | 6 | No |
| Connection |
| Connection |
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|
|
|
VCC: with 1.5A PTC (current limit)
Chassis Intrusion
A Chassis Intrusion header is located at JL1. Attach the appropriate cable to inform you of a chassis intrusion.
Chassis Intrusion
Pin Definitions
(JL1)
Pin# Definition
1Battery voltage
2Intrusion signal