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Technical Overview: Dell Dimension E520 Service Manual
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Technical Overview
Dell™ Dimension™ E520 Service Manual
 Inside View of Your Computer
System Board Components
Power Supply DC Connector Pin Assignments
Inside View of Your Computer
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1
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power supply
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2
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system board
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3
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hard drive
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4
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floppy drive (optional) or media card reader (optional)
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5
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CD or DVD drive
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|
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System Board Components
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1
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CPU fan connector
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2
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processor and heat sink connector
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3
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processor power connector
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4
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memory module connectors
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5
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battery socket (BATTERY)
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6
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SATA Connectors SATA0 and SATA1
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7
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front panel I/O connector
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8
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main power connector
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9
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SATA connectors SATA4 and SATA5
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10
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FlexBay USB connector
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11
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clear CMOS jumper (CLRCMOS)
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12
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password jumper (CLRPSWD)
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13
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PCI Express x16 card connector
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14
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PCI Express x1 card connector
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15
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PCI card connector
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16
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floppy drive connector (FLOPPY)
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17
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Standby LED (near blue lever on PCI Express x16 connector)
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Power Supply DC Connector Pin Assignments
DC Power Connector P1
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Pin Number
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Signal Name
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Color
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Wire Gauge
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1
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+3.3 VDC
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Orange
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18-AWG
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2
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+3.3 VDC
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Orange
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18-AWG
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3
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COM
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Black
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18-AWG
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4
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+5 VDC
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Red
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18-AWG
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5
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COM
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Black
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18-AWG
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6
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+5 VDC
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Red
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18-AWG
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7
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COM
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Black
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18-AWG
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8
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POK
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Gray
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18-AWG
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9
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+5 VFP
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Purple
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18-AWG
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10
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+12 VB DC
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White
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18-AWG
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11
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+12VB DC
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White
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18-AWG
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12
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+3.3 VDC
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Orange
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18-AWG
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13
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+3.3 VDC
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Orange
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18-AWG
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14
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-12 VDC
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Blue
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18-AWG
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15
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COM
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Black
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18-AWG
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16
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PS-ON
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Green
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18-AWG
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17
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COM
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Black
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18-AWG
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18
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COM
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Black
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18-AWG
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19
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COM
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Black
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18-AWG
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20
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N/C
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N/C
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18-AWG
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21
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+5 VDC
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Red
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18-AWG
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22
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+5 VDC
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Red
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18-AWG
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23
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+5 VDC
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Red
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18-AWG
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24
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COM
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Black
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18-AWG
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DC Power Connector P2
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Pin Number
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Signal Name
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18-AWG Wire
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1
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COM
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Black
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2
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COM
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Black
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3
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+12 VA DC
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Yellow
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4
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+12 VA DC
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Yellow
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DC Power Connect P3, P5, P8, and P9
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Pin Number
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Signal Name
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18-AWG Wire
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1
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+3.3 VDC
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Orange
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2
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COM
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Black
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3
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+5 VDC
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Red
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4
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COM
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Black
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5
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+12 VB DC
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White
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DC Power Connector P7
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Pin Number
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Signal Name
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18-AWG Wire
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1
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+5 VDC
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Red
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2
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COM
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Black
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3
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COM
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Black
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4
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+12 A VDC
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Yellow
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DC Power Connector P10
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Pin Number
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Signal Name
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18-AWG Wire
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1
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+12 VA DC
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Yellow
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2
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COM
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Black
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3
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COM
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Black
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4
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+5V DC
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Red
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NOTE: The P10 connector is intended for use with PCI Express graphics cards that have power requirements exceeding 75 watts. |
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