Thought this is worth sharing:
I found an alternative USB 3.0 solution for the cMP, leveraging the Airport Express slot for a
Syba MPE20142 mPCIE USB 3.0 Controller . Based on the NEC Renasas driver, the card delivers
HDD backup speeds equivalent to any current USB 3.0 PCIe Fresco Logic, CalDigit, OWC, Sonnett PCIe for only
$23.42!:
Image
Using an open source driver, the card is easily recognized without the need for flashing it:
Link to insanely mac. USB 3.0 HighSpeed and SuperSpeed controllers are identified in system information.
Installing the card is relatively easy, although it will require additional power to function. Luckily, last December I tapped the 4-pin power connector that feeds the DVD power bay and I can easily power the card.
The cables provide an adequate length for routing within the internals of the Mac Pro to find a location in the rear where I can Dremel cut two small holes to allow a proper mounting of the ports. It should be relatively easy to mount and secure them above PCIE slot #1. (I am considering a different cable for $10.00 more that would keep the ports flush with the surface of the MP)
While a Fresco-logic solution works great, I need to free up a PCIe slot for a second PCIe SSD. Benchmarking the drive in BlackMagick, I am seeing a maximum transfer rate on the hard disks I'm currently working with @ 150MB/s write and 139MB/S read. (this is on a 3tb Seagate NAS HDD)