m.2 SSD with adapter

Jul 30, 2018
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Hello
my motherboard is Asus h81m-plus: https://www.asus.com/de/Motherboards/H81MPLUS/
and i'm willing to buy the Samsung 970 Evo SSD:
https://www.amazon.de/Samsung-MZ-V7E250BW-970-Evo-Interne/dp/B07CGGNX7S/ref=sr_1_fkmr0_2?ie=UTF8&qid=1532954349&sr=8-2-fkmr0&keywords=smasmug+970+evo
Which key has the SSD ?
how much speed i will get with the adapter ?
there is alot of Adapters that support only M&B keys so which kind of adapters i must buy ?
Other PC spec: intel core i54460/Nvidia Geforce GTX 950/8GB Hyperx rams
Best regards

 
doing this modified BIOS and installing the SSd with an adapter will be too much complicated for me >_<
i will just pass the idea and it will be better if i just buy a new motherboard.
tyvm Calvin