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About Your Computer
Dell™ Dimension™ E521 Service Manual
Front View of the Computer
Back View of the Computer
Back Panel Connectors
Front View of the Computer
1 | cover latch | Use this latch to remove the cover. See Removing the Computer Cover. |
| release |
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2 | location of | Use the Service Tag to identify your computer when you access the Dell |
| Service Tag | Support website or call technical support. |
3 | CD or DVD | Press to eject a disk from the CD or DVD drive. |
| eject button |
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4 | CD or DVD | The drive light is on when the computer reads data from the CD or DVD |
| activity light | drive. |
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5 | FlexBay drive | Can contain an optional floppy drive or optional Media Card Reader. For |
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| information on using the Media Card Reader, see "Using a Media Card |
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| Reader (Optional) in your Owner's Manual. |
6 | microphone | Use the microphone connector to attach a personal computer |
| connector | microphone for voice or musical input into a sound or telephony |
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| program. |
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| On computers with a sound card, the microphone connector is on the |
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| card. |
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7 | headphone | Use the headphone connector to attach headphones and most kinds of |
| connector | speakers. |
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8 | LAN indicator | This light indicates that a LAN (local area network) connection is |
| light | established. |
9 | diagnostic | Use the lights to help you troubleshoot a computer problem based on |
| lights (4) | the diagnostic code. For more information, see Diagnostic Lights. |
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10 | The | |
| activity light | writes data to the hard drive. The light might also be on when a device |
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| such as a CD player is operating. |
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11 | power button, | Press the power button to turn on the computer. The light in the center |
| power light | of this button indicates power state. |
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| NOTICE: To avoid losing data, do not use the power button to turn off |
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| the computer. Instead, perform an operating system shutdown. |
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12 | USB 2.0 | Use the front USB connectors for devices that you connect occasionally, |
| connectors (2) | such as joysticks or cameras, or for bootable USB devices (see System |
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| Setup Options for more information on booting to a USB device). |
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| It is recommended that you use the back USB connectors for devices |
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| that typically remain connected, such as printers and keyboards. |
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13 | vents | For adequate cooling, do not block any of the vents. |
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