M.2 SSD to 2.5 SATA ADAPTER

Amazon has USB adapters for SSD drives.

https://www.amazon.ca/s/?ie=UTF8&keywords=m2+ssd+usb+adapter&tag=googcana-20&index=aps&hvadid=232487146275&hvpos=1t1&hvnetw=g&hvrand=15453413103317868784&hvpone=&hvptwo=&hvqmt=e&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9000813&hvtargid=kwd-300148293280&ref=pd_sl_6wocoo4ok5_e

You would then need Acronis or like tool to make an image of the existing system on the new drive and make it bootable.

There's no such thing as a NVMe to SATA adapter. There are M.2 NVMe cards you put in a PCIe slot which work on up to date PCs.
example https://www.scan.co.uk/products/lycom-dt-125-1x-pcie-m2-ssd-plus-2x-sata-m2-ssd-pcie-30-x4-low-profile-host-adapter-card-for-windows

That card actually does both NVMe and SATA but the NVMe slots go to the PCIe bus (you can see the traces on the photo) and the SATA slots go to SATA connectors so in effect it acts as two separate cards.

I have found this:
https://www.amazon.com/StarTech-com-M-2-U-2-Adapter-SFF-8639/dp/B073W65QX6/ref=sr_1_3?ie=UTF8&qid=1535379185&sr=8-3&keywords=nvme+to+sata+adapter&dpID=51kkwIlofKL&preST=_SY300_QL70_&dpSrc=srch

But you may want to verify pin types to make sure it is workable.  
From Startechs Website
https://www.startech.com/faq/hard_drive_accessories_m2_u2_boot_an_os#PEX4M2E1
https://www.startech.com/faq/hard_drive_accessories_m2_u2_compatibility#PEX4M2E1
https://www.startech.com/faq/hard_drive_accessories_m2_compatibility_no_sata#PEX4M2E1
The following article also gives a good overview of the requirements
https://tinkertry.com/how-to-boot-win10-from-samsung-950-pro-nvme-on-superserver

Would you also be able to post the Model Number of the NVMe drive in question?  

Thanks

It looks like NVMe to SATA but it is actually NVMe to U.2 SATA Express, needs a SATA Express connector on the motherboard and those aren't common. To convert NVMe to SATA you have to have a big chip that talks PCIe/NVMe to the SSD and SATA to the mobo and that adapter does not have one. I doubt anyone would ever make a NVMe to SATA device as the market is too small.

Ah I see...I missed that.  Thanks Andy.

There is a device that will do it.  But totally not worth it unless you have lots of requests to recover data.
The Ditto device is pretty sweet.  But is extremely pricey unless you do this for a living.
https://www.cru-inc.com/products/wiebetech/ditto-dx-forensic-fieldstation/

Here's the adapters they have for the device:
https://www.cru-inc.com/products/wiebetech/ditto-pcie-adapter-bundles/

So did whoever is posting in Amazon as Startech technical support under Customer questions & answers.

The board in that bundle looks like the Startech one that has one NVMe and one SATA, always worth having both sockets available for next time.

This one is the cheapest one I've seen but it only does NVMe, no SATA on the other side.

Thank you all

We end up ordering this:
https://www.silverstonetek.com/product.php?pid=575&area=en

I guess it will do the trick when installed to a HP z240 WorkStation?

And yes, we have Acronis and several other disk management SWs.

One of each socket so useful next time as well. Should be OK in that workstation but https://support.hp.com/gb-en/document/c05681904 may apply.

N.B. that workstation has an onboard M.2 NVMe slot I think, safer to use a PCIe card anyway.

I don't see a big capacitor on your board, most of the other makes have one plus one or two little 8 pin chips. May be on the other side though. I may not be an expert on the electronics needed on such cards but I know that if one manufacturer has to put a big 3.3ohm resistor on their board then the others need one too.