Chapter 2: Configuring the
Connector | Function |
| Notes |
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ISA Bus Expansion Slots |
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J23 | Power Supply Connector | ATX Standard | |
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J27 | Front I/O Connector |
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" | System Power On/Off | 1 | - Power; 2 - Ground |
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" | Reset Switch | 23 - Reset; 22 - Ground | |
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" | PC Speaker | 27 - Speaker; 24 - +5V DC | |
| Note: Jumper pins 26 and 27 |
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| to use the onboard speaker |
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" | 20 - Positive; 18 - Ground | ||
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" | IDE LED | 13 or 16 - Positive; 15 - Negative | |
| Note: IDE and SCSI functions |
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| share the same LED |
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" | Infrared | 6 | - +5V DC; 8 - Receive Data; |
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| 9 | - Ground; 10 - Transmit Data |
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" | Speaker (Buzzer) | Enabled (default) | |
| Note: Jumper pins 26 and 27 |
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| to use the onboard speaker |
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J28 | Infrared Port Connector (Note: | 1 | - Receive Data; 2 - Ground; |
| Do not connect IR devices to | 3 | - Transmit Data; 4 - +5V Power |
| J27 & J28 simultaneously) |
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J29, J30 | CPU Fan | 1 | - 12+V Power; 2 - Ground; |
| (J29 - Primary) | 3 | - Status (Running or Stopped) |
| (J30 - Secondary) |
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J31 | Chassis Fan | 1 | - 12+V Power; 2 - Ground; |
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| 3 | - Status (Running or Stopped) |
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J33 | 1 | - Ground; 2 - | |
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| 3 | - Ground; 4 - |
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J34 | Modem/Telephony | 1 | - No Connect; 2 - MIC Out; |
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| 3 | - Ground; 4 - Speaker Input |
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J35 | Game Port/MIDI | Upper Level | |
| MIC In | Lower Level | |
| Line In | Lower Level | |
| Line Out | Lower Level | |
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J36 | Wavetable Upgrade | 1 | - Right Channel Input; 2 - Ground; |
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| 3 | - Left Channel Input; 4 - Ground; |
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| 5 | - No Connect; 6 - Ground; |
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| 7- Ground; 8 - Ground | |
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J37 | SCSI | Fast SCSI (optional) | |
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J38 | SCSI | Ultra Wide SCSI (optional) | |
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U1 | Primary P6 CPU | Socket 8 | |
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U2 | Secondary P6 CPU | Socket 8 | |
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U25 | System BIOS |
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Table 2-9B: Case & Peripheral Connections (cont.)
16 |