RAID 0 on UX32VDA

Hello, I have an UX32VDA with an original RAID module with two Sandisk 128GB mSata SSD in RAID 0 mode.
I have fully cleaned all drive after an OS problem to set a clean install of Windows 10 1709.
During the installation process now I see two SSD of 128GB and not one SSD of 256GB.
How can I recreate the array ?
Is there a sort of raid manager in the BIOS ?
I have seen, searching on the web, that somebody has entered the Intel Rapid Storage Manager by pressing CTRL+I on boot but on my model doesn't work.
My BIOS version is 203.
Is there an updated version of BIOS ?
Thank you
Stil86

Sorry for late reply.
This model's latest  BIOS version is 203 , it doesn't support raid settings. Sorry for the trouble.