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GX520 - OptiPlex - 512 MB RAM
User's Guide
Dell GX520 - OptiPlex - 512 MB RAM User's Guide Page 151
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11.
Replace the CD/DVD drive.
12.
Connect the AC power cable to the connector.
13.
Replace the computer cover
.
DC Power Connectors
DC Power Connector P1
Pin Number
Signal name
18
-
AWG Wire
1
+3.3 VDC
Orange
2
+3.3 VDC
Orange
3
GND
Black
4
VCC (+5 V)
Red
5
GND
Black
6
VCC (+5 V)
Red
7
GND
Black
8
PS_PWRGOOD
Gray
9
P5AUX
Purple
10
V_12P0_DIG
Yellow
11
V_12P0_DIG
Yellow
12
+3.3 V
Orange
13
+3.3 V
Orange
14
-
12 V*
Blue
15
GND
Black
16
PWR_PS_ON
Green
17
GND
Black
18
GND
Black
19
GND
Black
20
NC
N/C
21
VCC (+5V)
Red
1
...
150
151
152
...
229
Mini Tower Computer
1
Desktop Computer
1
Small Form Factor Computer
1
Advanced Features
2
Security
3
Password Protection
3
System Password
4
Administrator Password
5
System Setup
6
System Setup Options
7
Boot Sequence
9
Booting to a USB Device
10
Clearing CMOS Settings
12
Hyper-Threading
12
Power Management
13
Battery
14
Before You Begin
16
Chassis Intrusion Switch
20
Cleaning Your Computer
23
Desktop Computer
26
Finding Information
27
Operating System CD
28
Getting Help
30
Problems With Your Order
31
Product Information
31
Before You Call
32
Contacting Dell
32
Glossary
41
Memory
53
Removing Memory
54
Mini Tower Computer
59
PCI Express Cards
67
Removing a PCI Express Card
69
Removing a Hard Drive
76
Adding a Second Hard Drive
78
Drive-Panel Inserts
79
Power Supply
101
DC Power Connectors
102
DC Power Connector P2
103
DC Power Connector P4
103
DC Power Connector P7
103
FCC Notices (U.S. Only)
109
Drivers
113
Creating a Restore Point
114
Before You Begin
115
Reinstalling Windows XP
116
Removing the System Board
118
Desktop System Board Screws
119
Replacing the System Board
120
Desktop Computer
121
Back View
122
Back-Panel Connectors
122
Inside Your Computer
123
System Board Components
124
Jumper Settings
124
PCI Cards
126
Removing a PCI Card
127
Serial Port Adapters
132
Drives
136
CD/DVD Drive
137
Installing a CD/DVD Drive
138
Floppy Drive
139
Installing a Floppy Drive
140
Hard Drive
141
Installing a Hard Drive
142
I/O Panel
144
Processor
146
Installing the Processor
147
DC Power Connector P3
152
DC Power Connector P5 and P6
152
Back to Contents Page
157
Front View
158
PCI Cards
163
Abbreviations and Acronyms
185
Small Form Factor Computer
185
Solving Problems
186
Keyboard Problems
187
A program stops responding
188
A program crashes repeatedly
188
A solid blue screen appears
188
Memory Problems
189
Mouse Problems
189
Network Problems
190
Power Problems
190
Printer Problems
191
Restoring Default Settings
192
Sound and Speaker Problems
192
Video and Monitor Problems
193
Mini Tower Computer
204
Dell Diagnostics
206
System Lights
207
Diagnostic Lights
208
Beep Codes
209
Error Messages
210
Microsoft
212
Windows
212
Warranty
223
Adding User Accounts
225
Fast User Switching
225
Network Setup Wizard
225
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