sbc slotI don't know if RAID1 is useful on M.2 SSDs, but if it is, having two ports (if that exists) would be better. If not, I'll get by with 1 slot. I'm also considering low-power x86 devices, maybe aBP-206SI - Slot SBC and Backplanes - PICMG Single Board Computers. Wallmount, ISA, 6