The SSD Review published a review on the ASRock Ultra Quad M.2 Card
A quote from the article:
It was only a few weeks ago that ASRock announced their newest Ultra Quad M.2 Card yet today we have it in hand and tested. The ASRock Ultra Quad M.2 Card bears a striking resemblance to the HighPoint SSD7101 RAID Controller we tested (http://www.thessdreview.com/daily-news/latest-buzz/highpoint-ssd7101a-1-nvme-raid-controller-review-samsung-toshiba-m-2-ssds-tested/) a few weeks back? but there are some very distinct differences to both that we will point out throughout the report. Both cards rely on four NVMe SSDs which can be set into RAID mode through VROC (only way to boot), or your system OS softRAID to provide incredibly fast data transfer throughput and IOPS.ASRock Ultra Quad M.2 Card Review @ The SSD Review