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Driver Details

Dell Dell Insprion N4120 System BIOS, A02
Dell Insprion N4120 System BIOS
Release Date 10/2/2011
Importance: Recommended
Version: A02

The following formats are available for the file you have selected

File Format: Hard-Drive Download File Download File
File Name:


Description: This file contains a compressed (or zipped) set of files. Download the file to a folder on your hard drive, and then run (double-click) it to unzip the set of files. Follow the instructions to complete the installation.
Download Type: HTTP
File Size: 3MB

Previous Versions

No previous version available.


Dell Insprion N4120 System BIOS

Level of Importance:Recommended

Dell recommends applying this update during your next scheduled update cycle. The update contains feature enhancements or changes that will help keep your system software current and compatible with other system modules (firmware, BIOS, drivers and software).


Inspiron 14 N4120
Inspiron N4120
Operating Systems

Applies to

  • Dell Insprion N4120 System BIOS

Fixes & Enhancements

Issues fixed: 1.Enter S3 and then flash BIOS in OS,system will go to S3 after shutdown. 2.There are some BIOS options will auto-disable after doing some action. 3.Can’t Coldboot to USB3.0 ODD when set CD/DVD as first boot device in BIOS 4.The 3rd place bootable device will change to “disable” after some action. 5.USB HDD without electric power can't boot from USB 3.0 port. 6.Win8:does not implement XHCI BIOS Handoff Correctly 7.System can’t boot EPSA via press “Fn+PowerButton” 8.Enhanced the system shutdown mechanism when RSOC=0%. 9.Enhanced the system resume mechanism when RSOC<=3%. 10.Enhanced the SMBUS communicate mechanism when SMBUS fail. 11.Update the resume mechanism when critical battery low at S3. 12.Update Ambient THERMISTOR and Chipset THERMISTOR at DELLDIAG. 13.LCD Brightness become very dim when use CTRL+ALT+DEL to reboot in EPSA panel test *Feature update: Disable unused port on Q14AL. update ePSA to C_PG4213. Add boot list recovery mechanism for factory request.

Installation instructions

Hard Drive Installation (via WinZip) with Setup.exe File for R313321.exe


1.Click Download Now, to download the file.
2.When the File Download window appears, click Save (Windows XP 
users will click Save) this program to disk and click OK.  The Save In: 
window appears. 
3.From the Save In: field, click the down arrow then click to 
select Desktop and click Save.  The file will download to your desktop.
4.If the Download Complete window appears, click Close.  The file 
icon appears on your desktop.


1.Double-click the new icon on the desktop labeled R313321.exe.
2.The Self-Extracting window appears and prompts you to extract or 
unzip to C:\DELL\DRIVERS\R313321. Write down this path so the executable (I.e. 
Setup.exe) file can be found later.
3.The Self-Extractor window appears.
4.Click OK.
5.After completing the file extraction, if the Self-Extractor 
window is still open, close it.
6.Click the Start button and then click Run.
7.Type C:\DELL\DRIVERS\R313321 in the Open textbox and then click OK.
8.Follow the on-screen installation instructions.            


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