Rear View
20
| 1 |
19 |
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18 | 2 |
17 | 3 |
16 | 4 |
15 |
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14 |
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13 |
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12 |
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11 |
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10 |
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9 | 5 |
8 |
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7
6
1Serial Number Label: For machine identification.
2and 3 
1 
2 ) : For a TTY terminal, modem, or other serial devices.
4Keylock: For security.
5Security Bolt: Optional security measure.
6Adapter Slots (6): For adding PCI adapters.
7Empty Slot: This slot is not used.
8Ethernet Connector ( 
) : For attaching your computer to an Ethernet/Twisted pair connection through a 10baseT connector.
9Headphones: For connecting headphones.
10Microphone: For connecting a microphone.
