Suggestions for problematic PCIe msata

So I have a couple of these laying around and I was hoping to integrate one of them into my fledgling UnRAID box:

Quad mSATA PCIe SSD: http://www.addonics.com/products/ad4mspx2.php

Dual Hyper HDD - mSATA SSD hybrid Controller: http://www.addonics.com/products/ad4sahmsa.php

Preferably the Dual Hyper, as the additional sata ports would fill the available drive slots in my case.

However, after testing, I cannot access either of the cards (with mSata drive slotted) in UnRAID via SNAP as they just don't appear.

The cards definitely work as I have pulled them and tested them in my desktop machine.

Both cards show up in BIOS, although I do get a message on initial system boot showing the mSata (256GB Samsung EVO) as being "unconfigured". The message is the first thing I see when I power on and is there only briefly.

Also during boot, I receive a bunch of errors that disappear once the PCIe card is removed. The errors look similar to:

 

May 13 08:42:59 Tower kernel: ata9: link is slow to respond, please be patient (ready=-19)
May 13 08:42:59 Tower kernel: ata9: COMRESET failed (errno=-16)
May 13 08:42:59 Tower kernel: ata9: link is slow to respond, please be patient (ready=-19)
May 13 08:42:59 Tower kernel: ata9: COMRESET failed (errno=-16)
May 13 08:42:59 Tower kernel: ata9: link is slow to respond, please be patient (ready=-19)
May 13 08:42:59 Tower kernel: ata9: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
May 13 08:42:59 Tower kernel: ata9.00: ATA-8: WDC WD5000AACS-00G8B1, 05.04C05, max UDMA/133
May 13 08:42:59 Tower kernel: ata9.00: 976773168 sectors, multi 0: LBA48 NCQ (depth 0/32)
May 13 08:42:59 Tower kernel: ata9.00: configured for UDMA/100

Although I have neglected to screen shot it in IPMI, the above looks very familiar.

My setup is in my sig. and I have the latest BIOS installed.

Does anyone have any suggestions for getting these cards working, or should I just investigate other options for the PCIe slot?