55
No. | Component | No. | Component |
1 | 4 memory slots | 2 | CPU fan connector |
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3 | CPU socket | 4 | ATX 12V power connector |
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5 | USB connectors | 6 | PCI Express X16 connector |
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7 | 2 PCI conventional bus connectors | 8 | CD audio connector |
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9 | S/PDIF audio connector | 10 | External COM port connector |
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11 | System fan connector | 12 | OneButton Recovery connector |
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13 | BIOS | 14 | USB connectors |
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15 | 4 Serial ATA IDE connectors | 16 | Front LED connector |
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17 | Chassis intrusion connector | 18 | Clear CMOS jumper |
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| No jumper — normal |
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| Jumper — clear CMOS |
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19 | Lithium battery | 20 | Diskette drive connector |
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21 | Parallel ATA IDE connector | 22 | Main power connector |
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