Dell E6520 and 50mm sata?

[The_Dave9081]

I have a dell E6520 (My favorite $5.00 Thrift Store find yet.) and I am looking to upgrade the storage system from a hard drive to a hard drive and ssd without loosing my optical drive. https://www.amazon.com/Drive-Caddy-Modular-original-Newmodeus/dp/B009OLHG30

 

This device has a 25mm pcie msata slot on the board, I would prefer to use a 50mm https://www.amazon.com/gp/product/B07CTGJBCR/ref=ox_sc_act_title_1?smid=AG6COPKGTCMIO&psc=1

 

https://www.dell.com/downloads/global/products/latit/en/latitude-e6520-specsheet.pdf

https://www.cnet.com/products/dell-mobility-solid-state-drive-256-gb-sata-150-series/

 

above is the original ssd shipped when ordered from dell regardless of the slot being present on the board. GO DELL!!!

 

Bellow are some information sources I found regarding the issue. One user post results with a 50mm ssd working in the wwan slot on a similar device but not exactly the same as my own.

https://www.dell.com/community/Laptops-General/Latitude-E6420-and-E6430-mSATA-SSD-compatibility-and-BIOS-issue/td-p/3966924

https://www.dell.com/community/Laptops-General/E6530-additional-mSata-SSD-boot/td-p/4038067

 

So question for the linus forums: Will the Dogfish 480GB drive work in the larger slots or is the 25mm slot the only one with an msata controller?