OCZ Z-Drive card support

[Starseed6]

I have recently freed up a couple of OCZ Z-Drive R4 PCIe SSD cards (300GB), and I would like to put them into my unRAID 6 server for my VMs.  The card installs OK, but comes up as 4 separate 75gb drives within unRAID.  If memory serves, this is because the driver being used is the generic driver, which also reduces the performance of the card.  Has anyone used one of these cards successfully?  Is there any way of getting a proper driver on there?  (The drivers provided by OCZ do not include a Slackware driver, so I am not sure how I would install)

 

Any help would be greatly appreciated!!