User manual DELL DIMENSION E520
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Manual abstract: user guide DELL DIMENSION E520
Detailed instructions for use are in the User's Guide.
[. . . ] DellTM DimensionTM E520 Owner's Manual
Service Tag cover latch release CD or DVD eject button CD or DVD activity light FlexBay for optional floppy drive or Media Card Reader microphone connector headphone connector diagnostic lights hard-drive activity light power button/ power activity light USB 2. 0 connectors (2)
power connector
sound connectors (integrated) (6) optional VGA video connector (integrated) network adapter USB 2. 0 connectors (6) PCI Express graphics card card slots for PCI Express x16 (1), PCI (2), PCI Express x1 (1)
Model DCSM
w w w. c o m
Notes, Notices, and Cautions
NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. If you purchased a DellTM n Series computer, any references in this document to Microsoft® Windows® operating systems are not applicable.
Abbreviations and Acronyms
For a complete list of abbreviations and acronyms, see the "Glossary" on page 147.
____________________
Information in this document is subject to change without notice. [. . . ] For additional information on the type of memory supported by your computer, see "Memory" on page 109.
DDR2 Memory Overview
DDR2 memory modules should be installed in pairs of matched memory size, speed, and technology. If the DDR2 memory modules are not installed in matched pairs, the computer will continue to operate, but with a slight reduction in performance. See the label on the module to determine the module's capacity.
NOTE: Always install DDR2 memory modules in the order indicated on the system board. The recommended memory configurations are: or A pair of matched memory modules installed in DIMM connectors 1 and 2 and another matched pair installed in DIMM connectors 3 and 4 A pair of matched memory modules installed in DIMM connectors 1 and 2
NOTICE: Do not install ECC or buffered memory modules. · · If you install mixed pairs of DDR2 533-MHz and DDR2 667-MHz memory, the modules function at the slowest speed installed. Be sure to install a single memory module in DIMM connector 1, the connector closest to the processor, before you install modules in the other connectors.
Removing and Installing Parts
69
1 2 1 Channel A: matched pair of memory modules in connectors DIMM_1 and DIMM_2 (white securing clips) 2 Channel B: matched pair of memory modules in connectors DIMM_3 and DIMM_4 (black securing clips)
NOTICE: If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that you may have, even if you purchased the new modules from Dell. If possible, do not pair an original memory module with a new memory module. You should install your original memory modules in pairs either in DIMM connectors 1 and 2 or DIMM connectors 3 and 4. NOTE: Memory purchased from Dell is covered under your computer warranty.
Addressing Memory With 4-GB Configurations
Your computer supports a maximum of 4 GB of memory when you use four 1-GB DIMMs. Current 32-bit operating systems, such as Microsoft® Windows® XP can use a maximum of 4 GB of address , space; however, the amount of memory available to the operating system is less than that installed. Certain components within the computer require address space in the 4-GB range. Any address space reserved for these components cannot be used by computer memory.
Installing Memory
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.
70
Removing and Installing Parts
1 Follow the procedures in "Before You Begin" on page 59. 2 Lay the computer on its side so that the system board is on the bottom of the inside of the computer. 3 Press out the securing clip at each end of the memory module connector.
1
2
3
1
memory connector closest to processor
2
securing clips (2)
3
connector
4 Align the notch on the bottom of the module with the crossbar in the connector.
3 2
1
4 1 4 cutouts (2) crossbar 2 memory module 3 notch
Removing and Installing Parts
71
NOTICE: To avoid damage to the memory module, press the module straight down into the connector while you apply equal force to each end of the module. 5 Insert the module into the connector until the module snaps into position. If you insert the module correctly, the securing clips snap into the cutouts at each end of the module.
6 Replace the computer cover. NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the
computer.
7 Connect your computer and devices to electrical outlets, and turn them on. 10 To verify that the memory is installed correctly, check the amount of memory (RAM) listed.
Removing Memory
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis. [. . . ] Character-based software, such as text editors, displays in video modes that can be defined as x columns by y rows of characters.
U
UMA -- unified memory allocation -- System memory dynamically allocated to video. UPS -- uninterruptible power supply -- A backup power source used when the electrical power fails or drops to an
Glossary
155
video resolution -- See resolution. virus -- A program that is designed to inconvenience you or to destroy data stored on your computer. A virus program moves from one computer to another through an infected disk, software downloaded from the Internet, or e-mail attachments. [. . . ]
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