YOU have NO idea how much this post helped me with my upgrade!!! 

The question before I order. I am assuming you left the HDD in as extra storage correct?

I am a professor at a university and they gave me a new laptop May 2020 due to COVID and work at home. It is a Dell Latitude with a 256GB SSD 8GB Ram i5 quad-core. From off to desktop takes 6 seconds. I'm not sure of the other specs b/c the university has it locked down so I cannot run any programs unless I go through them. It takes almost 3 minutes to desktop on my 78G8 Acer like yours. How much faster does this make this already good workhorse may I ask?

Well I certainly hope that you are correct and see no reason why you would just make something up. This post is the only one across the net that I can find that 100% confirms that it will accept the m.2 nvme 3.0 x4 M keyed pcie and work. The company could not even tell me what the slot on this motherboard is for or capable of. I cannot find a service manual on this particular model, however, if it what I show in the pictures will work, then this laptop was made to be way ahead of it's time. That's why I ordered it to begin with even though it's only a dual core i7. With this upgrade and the ram at 12 it should be as fast as my university laptop at a quad core in my opinion "should be". I have been told that it may work but that it may be half of the ability of the drive, meaning read/write speeds. I do not know why that would be. 

I have a question. Since mine did not come with a screw I ordered a package from amazon of various items along with screws ($6) lol. It came with the heatsink you see if the pics come thru. I am not a gamer, however, I do love playing them on PS and Xbox. I've never gotten into PC gaming. I ordered this strictly as a fast business laptop. I have saw research where using a heatsink yields faster speeds than not using one, although, I didn't purchase the WD with one it happen to be in the package. I'm certain it's low quality. Would you install anyways?

So you used the free version of Easeus and honestly just chose Migrate OS? Does that mirror your HDD to your SDD? Or how does it Migrate the OS only? Wouldn't it be better to start with a at this point fresh copy of Windows 10 v.2004? Then yes you would have to reinstall your programs, however, it would be clean, free of Malware (if any was hiding) and have nothing but the OS and programs you want. Your "user" files would be on the HDD unless I am forgetting something.

As for getting Win10 onto SSD wha't it like when you install SSD flip and hit the power? Does it see it? Or do you have to "tweak" things? Lastly, How's the WD SSD software that comes with it? Or i'm sure you have to d/l? Or do you use 3rd party SSD "Carekits"?

Thanks! Your helpful!

Hello, I’ve tried to upgrade also my laptop with a Samsun 970 Evo NVMe M.2 500gb however I can’t initialize the disk and an error about no existing disk has pop up can anybody share your comments pls!!, the bios and also windows partitions management detect the SSD but I can not do anything

I have had the same error as @MarianoJF88 and I would like to know if there is anyone that could help with this issue.