Step 6 Attach Cables, Continued
Block Connector The Apollo IV motherboard has a
| Pins 12 13 14 15 | 16 | 17 |
| 18 19 | 20 21 |
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| 10 11 |
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| Connector |
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Speaker |
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| Pin 12 |
| VCC |
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| Pin 13 |
| Ground |
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| Pin 14 |
| Ground |
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| Pin 15 |
| Speaker Data |
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IDE LED |
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| Pin 16 |
| LED Power |
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| Pin 17 |
| IDE Active |
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Remote Power Switch (Power when low). |
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| Remote Power |
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| Pin 19 |
| Ground |
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Hardware Reset Switch |
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| Pin 20 |
| Hard Reset |
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| Pin 21 |
| Ground |
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Power LED (lit when power is on) |
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| Pin 1 |
| +Power |
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| Pin 2 |
| Ground |
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Keyboard Lock |
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| Pin 4 |
| Keyboard Lock |
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| Pin 5 |
| Ground |
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Turbo LED (lit when low speed is active) |
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| Pin 6 |
| TURBO_LIT |
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| Pin 7 |
| TURBO_LEDPWR |
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Suspend Mode Switch (Suspend when |
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| Suspend In Switch |
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Low) |
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| Pin 9 |
| Ground |
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Suspend LED (lit when system in suspend |
| Pin 10 |
| Suspend Out LED+ |
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mode) |
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| Pin 11 |
| Suspend Out LED- |
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30Apollo IV PCI Pentium ISA Motherboard User’s Guide
