Manuals

Technical Overview: Dell Dimension 4300

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Technical Overview

Dell™ Dimension™ 4300

Internal View

System Board Connectors and Sockets

Socketed Microprocessor

Power Supply

DC Power Connectors

IDE Interface Cable Connections for Dell-Installed Drives

Placement of Dell-Installed Cards

Internal View

CAUTION: Before you begin any of the procedures in this section, read "Safety Instructions."

NOTICE: Be careful when opening the computer cover to ensure that you do not inadvertently disconnect cables from the system board.

System Board Connectors and Sockets

The 478-pin, socketed Intel® Pentium® 4 microprocessor, shown above with the heat sink attached, contains an integrated 8-KB primary (L1) cache with a secondary (L2) 256-KB Advanced Transfer Cache that resides in the processor's core and runs at the processor's internal clock speed.

The socketed microprocessor inserts into the ZIF connector mounted on the system board. A clip secures the heat sink to the connector.

Power Supply

The 250-W power supply can operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at 50 Hz. The power supply provides the DC operating voltages and currents listed in the following table.

Output Voltage1

Regulation

Minimum Current (A)

Maximum Current (A)2

+12 VDC
+/–5%
0.0
14.0³

+5 VDC
+/–5%
1.0
22.0

+3.3 VDC
+/–5%
0.1/0.0⁴
18.0

–12 VDC
+/–10%
0.0
1.0

+5 VFP
+/–5%
0.0
2.0

When the current load is outside of the ranges listed, but within each specified output current range, the +5-V, +12-V, and +3.3-V outputs are allowed to regulate at +/–10% of nominal DC voltages.
¹In system applications where +3.3 VDC is not used, these values may be 0 A
without affecting the regulation on the other outputs.
²Peak +12-VDC output power (up to 12 A) does not exceed 15 seconds in
duration. In this condition, the tolerance on the +12-V output is allowed to
be +/–10%.
³The required full load combinations are adjusted so that the total output
power is less than or equal to 250 W.
⁴Maximum continuous total DC output cannot exceed 200 W. Maximum
continuous combined load on +5-VDC and +3.3-VDC outputs cannot
exceed 135 W.

DC Power Connectors

Power Supply DC Connector Pin Assignments

DC Power Connector P1

Pin Number

Signal name

18-AWG Wire

1
+3.3 VDC
Orange

2
+3.3 VDC
Orange

3
COM
Black

4
+5 VDC
Red

5
COM
Black

6
+5 VDC
Red

7
COM
Black

8
POK
Gray

9
+5 VFP
Purple

10
+12 VDC
Yellow

11
+3.3 VDC¹
Orange

12
–12 VDC
Blue

13
COM
Black

14
PS ON
Green

15
COM
Black

16
COM
Black

17
COM
Black

18
+5 VDC
N/C

19
+5 VCD
Red

20
+5 VCD
Red

¹Sense connector

DC Power Connector P2

Pin Number

Signal Name

18-AWG Wire

1
COM
Black

2
COM
Black

3
+12 VDC
Yellow

4
+12 VDC
Yellow

DC Power Connectors P3, P5, P6, P8, and P9

Pin Number

Signal Name

18-AWG Wire

1
+12 VCD
Yellow

2
COM
Black

3
COM
Black

4
+5 VDC
Red

DC Power Connector P7

Pin Number

Signal Name

22-AWG Wire

1
+5 VCD
Red

2
COM
Black

3
COM
Black

4
+12 VDC
Yellow

IDE Interface Cable Connections for Dell-Installed Drives

IDE Channel IDE

Connector Location

Dell-Installed Drive

Primary IDE master

End connector on PRI IDE connector cable

Hard drive

Primary IDE slave

Middle connector on cable PRI IDE connector

Zip drive

Secondary IDE master

End connector on cable SEC IDE connector

CD or DVD drive

Secondary IDE slave

Middle connector on SEC IDE connector cable

CD-RW drive

Placement of Dell-Installed Cards

Card Connector

Card Description

AGP connector

Video

PCI1 connector

Sound

PCI2 connector

Modem

PCI3 connector

Network adapter, wireless network adapter, or swap box

PCI4 connector

1394 fire wire

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