Hope someone can help. I have a Pegasus2 R4 which works a treat on my Macbook Pro (late 2013) running Catalina and the PowerSTEX extension is version 6.2.13 The same drive connected to my Mac Pro 5,1 (2011) with the Thunderbolt Titan Ridge card added (every other Thunderbolt device I add works) and when the RAID is connected it has a kernal panic crash on start up. If I connect after a soft restart it is listed in the system report as connected and loaded, the PowerSTEX driver on the Mac Pro is version 6.2.9 not the same as the Macbook Pro. If I remove this driver the Mac Pro starts up no crash, the drive is listed but doesn't mount. Also the Promise Utiliy does have a window. Is there a way of getting the PowerSTEX 6.2.13 driver to see if I install it if it loads the drive? Can't seem to understand the versioning numbers listed in the software download page, it only offers the 6.2.9 version. Not sure how the 6.2.13 version got on my Macbook Pro.