Nope, no OEM wants to make that, not enough market for it. However you can buy NVMe to 6xSATA adapter, but your case might not fit those drives,
I planned on buying NVMe extension cable, cut a slit in case, run the cable outsidde, plug in NVMe to 6xSATA adapter outside of the case and keep the SSD's outside, this would need reliable external power supply for SSD (Amazon sells them for ~$30, but I don't trust them).
I believe you will get to ~10-15w with this setup, at which rate you could build regular ITX/MATX case to hold all SSD's with i3-10100 and be at ~16w idle.
Yeah there are some nice enough ITX cases with HDD bays [0], but any comparable replacement ends up relatively expensive, so it just hasn't made sense.
I planned on buying NVMe extension cable, cut a slit in case, run the cable outsidde, plug in NVMe to 6xSATA adapter outside of the case and keep the SSD's outside, this would need reliable external power supply for SSD (Amazon sells them for ~$30, but I don't trust them).
I believe you will get to ~10-15w with this setup, at which rate you could build regular ITX/MATX case to hold all SSD's with i3-10100 and be at ~16w idle.