Driver Details

Dell Dell Insprion N4120 System BIOS, A02

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.


Version A02, A02



Release date

02 Oct 2011

Last Updated

03 Nov 2011



Available formats

File Format:Hard-Drive
File Name:R313321.exe
Download Type:HTTP
File Size: 3MB
Format DescriptionThis 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.
To ensure the integrity of your download, please verify the checksum value.
Not available
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By downloading, you accept the terms of the Dell Software License Agreement.

Compatible Systems

Supported Operating Systems


Applies to

Dell Insprion N4120 System BIOS

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.

Important Information

My Download List-#1 (0 )

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This driver has been tested by both the independent software vendor (ISV) and Dell on the operating systems, graphics cards, and application supported by your device to ensure maximum compatibility and performance. Details
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).