Connecting Thunderbolt 2 device to 2010 Mac Pro I have a Pegasus RAID array that connects to Thunderbolt 2 ports. I'm looking for a way to hook this up over USB 3 to my Mac Pro.

Does anyone have any suggestions? There is for example this: http://www.apple.com/shop/product/MMEL2AM/A/thunderbolt-3-usb-c-to-thunderbolt-2-adapter

But I don't know if it would work since it would not be connected to a host device.

Thanks!
K.
You can connect the Promise Pegasus R4/R6 RAID directly to any 2013 Mac Pro.

You will need, however, a Thunderbolt 2 cable. These cables need to be bought separately and cost about about $35.

I have a Pegasus R4 RAID myself and can connect it to other Macs using the Thunderbolt cable without any issues. Keep in mind that you cannot connect two Macs simultaneously to the same Pegasus RAID.