![](/images/new-backgrounds/1266651/26665153x1.webp)
System Board Layout
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| 11 |
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| 7 | 9 |
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1 |
| PS/2 mouse port | 11 | Battery | |
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| PS/2 keyboard port | 12 | Intel 82371EB | |
3 |
| USB connectors | 13 | IDE1 connector | |
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| Serial port 2 | 14 | IDE2 connector | |
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| Parallel port | 15 | FDD connector | |
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| Serial port 1 | 16 | Intel 440BX | |
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| BIOS | 17 | DIMM sockets | |
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| ISA slots | 18 | Voltage regulators | |
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| PCI slots | 19 | CPU slot | |
10 |
| AGP slot | 20 | Power connector |
Chapter 2 System Board |