What I used for the silicone pad was a couple layers of
cut a little narrow and short (about 18mm x 75mm) and squished down with thumb pressure before installing the M2 x 5mm screw (spec called for M2 x 3mm, but I got a box of 100 on ebay for a couple $ and the longer - #0 phillips drive - screw fit just fine, else I would've just ground/filed it shorter) to hold the drive in place.
I have enough silicone left to do at least 9 more 80mm M.2 drives if they also require 2 layers.
Don't know what to tell you about the VGA output... did you try DisplayPort, HDMI, USB 3.0 or Thunderbolt instead? e.g. I would try a USB-C to DP adapter such as amazon.com/dp/B01NBX352B (or USB-C to VGA - amazon.com/dp/B0126ZFTZM ) before springing for a WD15 dock (dell.com/en-us/shop/dell-dock-wd15-with-180w-adapter/apd/450-aeuo/pc-accessories ).
The HDMI output works fine, don't know about other options yet (DP over USB-C) nor USB-C to VGA, but you may agree that is at least curious to use an adapter when the native port is present on the machine..
Anyway, when I use a Sata disk the VGA native port works pretty good. Using PCIe NVMe SSD it just do not work in any way, any Operational System, don't matter the drive I use (tried to use the latest and the same as come from factory - on Windows 10).
It would not be a problem if I know Dell is aware of this behavior and eventually releases a note about that - saying that it will never work or saying that a future BIOS firmware update may fix it. Unfortunately there are several situations that requires me to use this old fashioned port..
I have Latitude E5470 with 500 sata Hdd and i need to upgrade it to 256 SSD
I am in saudi arabia is that possible
Have you had succes in using Samsung EVO 960 on your E5580? If so, have your VGA port still working? I'm questioning that cause my Latitude 5480 started to fail VGA output after I installed a EVO 960 on it =(
Thanks a lot for any information..
I wasn't able to get exact technical detail on the RAID behavior. However, the assumption is that the two 4X drives will run at the same performance as the 2X drive it's grouped with in the RAID 5. Same goes with RAID 0 and RAID 1.
As to your class 50 question: Drive classes and lanes are considered separate. Class 50 drives have slightly better performance than a class 40 drive. Class 40 and class 50 drives can work with either 2 lane support for 4 lane support. In other words a class 50 drive will have slightly better performance on a 2 lane port when compared with a class 40 on a 2 lane port. Same goes when you have 4 lanes and comparing performance between class 40 and 50.
Hope that makes sense.
I had the previous document I linked deleted. I now have a new document that is more clear regarding M.2 BIOS password support. Here: www.dell.com/.../no-bios-to-set-a-hard-drive-password-on-nvme-ssd
I will add it in to the original post.
I went back to Dell engineering and they confirmed that there are physical limits on the Vostro 5468 motherboard that only allow support for M.2 SATA. I've reported this fact to the documentation team and the NVME support claimed in the user's guide is going to be removed.
I will work on getting a better answer on the caching but it will take some time. I should be able to have the answer in a couple weeks, probably in the form of a brand new document outlining scope of support and the technical aspects all in one place.
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Interesting! thanks for the update.. if I will face any problem will contact you.
Thank you for your comprehensive review and continued efforts to answer additional questions posted to this thread!
To extend these efforts, would it be possible to add information/instructions for the Optiplex 3050/5050/7050? They all seem to have a PCI-E M.2 slot, but I haven't found any instructions on how to make an nvme drive bootable under them like you provided for the 5040/7040.
Thank you for your help!
I have a question about Dell 5480 "H" processor and Dell 7480 "U" processor, do these board supports PCIe 2.0 / 3.0 with x4/x2 lanes.
As per your post I do know the lanes but want to confirm the PCIe version.