>> aisku su SATA versija tipo paprasciau ir pigiau..
>>
>> ~120 euriuku uz 250GB NVMe vs ~135 Eur uz 525GB SATA
> 
> ....tai siaip gali but, kad uzteks pamatyt ar 2 ipjovos ar 1 tame lizde
> ir issispres

ipjovos plokstese, tai lizduose pertvaros (keys)

http://www.asrock.com/mb/Intel/H110M-ITXac/?cat=Specifications

- 1 x M.2 Socket (Key E), supports type 2230 WiFi/BT module**
**The M.2 socket does not support SATA M.2 SSDs.

https://www.asus.com/lt/Motherboards/ROG-STRIX-B250I-GAMING/specifications/

1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support 
(SATA & PCIE 3.0 x 4 mode)
1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support 
(PCIE 3.0 x 4 mode)

Cia pavyzdziai, kai pertvara kitoj pusej (E) - lizdas Wifi/BT
ir kitas - kai vizualiai normalus (M key), bet SATA SSD nepriimtu.