Skip to main content
Welcome
Dell Sites
Dell Technologies
Premier Sign In
Partner Program Sign In
Dell Financial Services
Support
Dell Sites
Dell Technologies
Premier Sign In
Partner Program Sign In
Dell Financial Services
Support
Sign Out
Welcome to Dell
My Account
Place orders quickly and easily
View orders and track your shipping status
Enjoy members-only rewards and discounts
Create and access a list of your products
Manage your Dell EMC sites, products, and product-level contacts using Company Administration.
Sign In
Create an Account
Premier Sign In
Partner Program Sign In
Contact Us
CA/EN
Cart
Your Dell.com Carts
Products
Solutions
Services
Support
Back
Support
Support Home
Support Library
Support Videos
Support Services & Warranty
Drivers & Downloads
Manuals & Documentation
Diagnostics & Tools
Self-Repair & Parts
Service Requests & Dispatch Status
Order Support
Contact Technical Support
Community
Contact Us
CA/EN
Back
home
Support
Product Support
Manuals
Dell Precision Tower 3420 Owner's Manual
Hide Table of Contents
Notes, cautions, and warnings
Working on your computer
Safety instructions
Before working inside your computer
Turning off your computer
After working inside your computer
Removing and installing components
Recommended tools
Removing the cover
Installing the cover
Removing the front bezel
Installing the front bezel
Removing the hard drive assembly
Installing the hard drive assembly
Removing the optical drive
Installing the optical drive
Removing the intrusion switch
Installing the intrusion switch
Removing the memory module
Installing the memory module
Installing the optional PCIe SSD card
Removing the optional PCIe SSD card
Removing the expansion card
Installing the expansion card
Removing the power supply unit (PSU)
Installing the power supply unit (PSU)
Removing the power button
Installing the power button
Removing the Input/Output (I/O) panel
Installing the Input/Output (I/O) panel
Removing the system fan
Installing the system fan
Removing the heat sink fan cover
Installing the heat sink fan cover
Removing the heat sink assembly
Installing the heat sink assembly
Removing the processor
Installing the processor
Removing the system board
Installing the system board
System board components
System Setup
Boot Sequence
Navigation keys
System Setup options
Updating the BIOS
Jumper settings
System and setup password
Assigning a system password and setup password
Deleting or changing an existing system and/or setup password
Disabling a system password
Diagnostics
Enhanced Pre-Boot System Assessment (ePSA) diagnostics
Troubleshooting your computer
Power LED diagnostics
Beep code
Error messages
Specifications
Contacting Dell
Hide Table of Contents
Show Table of Contents
Show Table of Contents
Print
PDF
English
العربية
Hrvatski
Česky
Dansk
Deutsch
English
Español
Eesti
Suomii
Français
ελληνικά
עברית
Magyar
Bahasa Indonesia
Italiano
日本語
한국어
Nederlands
Norsk
Polski
Português Brasileiro
Português Ibérico
Română
Русский
Slovenčina
Slovenski
Srpski
Svenska
Türkçe
Tiếng Việt
简体中文
繁體中文
台灣正體
Loading, Please wait
System board components
Figure 1.
Components of the system board
PCI Express x16 Gen 3 slot
PCI Express x4 slot
USB 2.0 with network connector
USB 3.0 connector
PS2 keyboard/mouse connectors
serial port connector
2 x DisplayPort connector
HDMI connector
Line-Out connector
P2 power connector
intrusion switch connector
VGA connector
CPU socket
CPU fan connector
memory slot
SATA or PCIe SSD Slot
front power-switch connector
debug connector
SD Card Reader (optional)
front panel power LED indicator
system fan connector
audio connector
USB 2.0 connector
USB 3.0 connector
8-pin power connector
SATA 0 connector (Blue color)
SATA 2 connector(Black color)
password reset jumper
service mode jumper connector
speaker connector
SATA power connector
CLINK header for Intel WiFi add-in-card
SATA 1 connector (White color)
CMOS coin cell battery
Debug connector
Thunderbolt connector
CMCLR jumper
Data is not available for the Topic
Please provide ratings (1-5 stars).
Please provide ratings (1-5 stars).
Please provide ratings (1-5 stars).
Please select whether the article was helpful or not.
Comments cannot contain these special characters: <>()\