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Alienware 15 R3: Questions About SSD/HDD Installed

So, I got my first Alienware laptop almost 2 weeks ago, it's not new but it is lightly used, I've wanted one for years since before Dell bought them -- wish that would have never happened -- and I was looking some information up and came across the following site:


Now, this laptop has a 128GB M.2 SSD in it as well as a 1TB HDD.


As you can see from the following image, there's an SSD-1 slot, but what can actually fit in there:

I know I can fit an M.2 in the SSD-2 & SSD-3 slots, but like I asked before, what goes in SSD-1?


Can I replace the M.2 with an NVMe version, I believe I've come across things saying it can be done, but I want a "yea" or "nay" from the community.  Also, what is the biggest size HDD that can be put in here?  I know with the 2012 ROG that I bought used 2yrs ago, it would only support a maximum of 2TB, since this laptop is newer, can something bigger be installed?

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Re: Alienware 15 R3: Questions About SSD/HDD Installed

Hi mlauzon‌,

The following table shows the hard-drive options available in this computer.

Hard drive specifications
Hard driveOne 2.5-inch drive
Solid-state drive (SSD)
  • Two full-size M.2 PCIe/SATA drives
  • One half-size M.2 PCIe/SATA drive

So this computer has 3 M2 PCIe/SATA ports:
Two in size 2280, which runs at 4x and it also has one in size 2242, which runs at 2x.

Regarding the HDD size, we sell it with 1TB, but a 2TB should work fine. Anything above that, has not been tested by us, therefore we can not guarantee functionality.

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