Latitude 5591 how to install additional mSata drive (on the top of existing M.2 512GB PCIe 3 x4 NVME)

Hi,

I'm aware of supported drives configuration on page 15, https://topics-cdn.dell.com/pdf/latitude-15-5591-laptop_specifications2_en-us.pdf

I'm wondering if it is possible to install mSata (LMH-256V2M in my case) as a second drive?

I'm guessing it should be possible using some M.2 to msata adapter (WWAN port)?

I suppose connecting it to SATA AHCI port may not work as SATA AHCI and PCIe 3 x4 NVME ports occupied together are not listed in the specs above as supported configuration. On the other hand I don't know if it means it's not going to work. I'm not too much concerned about poor performance in this case.

Anyone could recommend specific adapter (preferably tested in latitude 5591) and maybe frame too?

That's how my current config looks like now: