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ACPI SMO8800 driver missing for Dell E6410/E6420/E6510/E6520 – unknown device ACPI SMO8800

We received a bunch of new Dell E6420’s at work, and needed to get them prepped for drivers and our image deployment. We run a deployment process through Landesk OSD, with HII (Hardware Independent Imaging), which basically means that we have 1 image for multiple model computers.

I installed our basic Windows 7 Pro x32 image on the new machine, and was going through drivers that needed to be installed, and ran into one tricky one. In Device Manager, right-click the device and click Properties. Under the details tab, choose Hardware ID from the drop box. You’ll see something like ACPI\SMO8800 (that’s what the unknown device was on mine). Google that hardware ID and you’ll find that it’s an accelerometer, a device that detects when your laptop may be falling and instantly stops the hard disk so it isn’t damaged on impact.

I went through and extracted the drivers for it in Windows 7 x86/x64, Vista x86/x64, and XP x86/x64. The zip file is 2.79 MB (2,926,227 bytes). You can download the drivers here : LINK IS DEAD

All you have to do is extract it (I use 7zip), and navigate your update drivers to your respective OS version and x86/x64 version. If you want a more detailed write up on how to do it, with pictures, let me know.

Hopefully this helps :).

65 replies on “ACPI SMO8800 driver missing for Dell E6410/E6420/E6510/E6520 – unknown device ACPI SMO8800”

Thanks for the solution it worked for me.

By the way where did you download that .zip file from?

Thanks once again.

We received our first batch of Dell E6420’s at work as well. Installed Win7 ent from scratch and got the same “unknown device” under device manager.

I just want to say thanks! it worked 🙂

Landesk 9x SP2 using standard OSD. We’re still having some trouble with HII. Can’t really play with it due to my boss wants me to focus on HIPS and daily tickets. We’re just a small shop that gets hit by viruses and malware daily. We’re also running McAfee EPO, but I seem to have lost trust in them. lol

Same set up here :). Landesk with HII, works gorgeously now that I have it tweaked. What issues with HII are you having? I’ve found their support to be very useful. We also use mcafee…our real winner against virus/maleware is websense though.

Hi Vivi,

Sorry it took me forever to reply back. Found out that my contract with my client is ending soon, so I kinda went into panic mode, currently looking for a job.

We’re still having HII issues with AHCI and ATA SATA type drives, I’m sure their in-house techs can figure that out. That’s the last thing I’m worried about right now. 🙁

Thanks for sharing this. We use universal wim file images for win xp and win 7 flavours, so this has made life a little easier. Dells are always fun when it comes to drivers, however if you hunt hard enough you almost eventually get them all.

Thank you so very much for posting this solution online. I have spent the best part of two days trying to get this driver installed on my Windows 7 64bit image. Dell list only a handful of drivers on their site for Win7 64bit and this wasn’t one of them.

Many thanks. This has been bugging me for a while in my Windows 8 test runs, but I never got around to resolving it because I knew it wasn’t vital to the system running. Finally on RTM now and decided to clear it up, and your page was the first to give me something concrete.

If you’d like to download the driver from the Dell website, navigate to support.dell.com, select your make/model/OS of laptop and then look in the “Application” group of files. The unknown device is the ST Microelectronics Driver – It’s the freefall sensor!

Frustrating that the drivers are not better labeled but then again too bad there isn’t a Staples Easy Button for everything either.

ACPI SMO8800 driver missing
Ethan on September 5, 2012 at 1:06 am said:

If you’d like to download the driver from the Dell website, navigate to support.dell.com, select your make/model/OS of laptop and then look in the “Application” group of files. The unknown device is the ST Microelectronics Driver – It’s the freefall sensor!

…navigate to support.dell.com, select your make/model/OS of laptop and then look in the “System Utilities” group of files. The unknown device is the ST Microelectronics Driver…for accelerometer…

My laptops : XPS L502x & L702x .

So I downloaded your zip file. Found the necessary driver in it (Win7 x64) and then found out it’s all registry codes? or whatever… I don’t really know anything about the internal workings of my computer. Is there a place I need to copy-paste these files? Or do I just double-click one of the files within the folder and my comp. will take care of the rest?
Thanks in advance and thanks for already finding a solution to the problem for me XD

You can just put them on your desktop, or wherever and then run the update driver on the one that has the exclamation point next to it and point it to this directory to pull drivers from.

kindly help me wit the following hardware ids for my dell vostro 3555.or the site to the dowload the following .ACPI /SMO8800 and USB/VID_138A&_0011&REV_0078.waiting for kindly reply thanks .

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