[Support UASP for Mac Pro] Inateck 4 Ports PCIe to USB 3.0 Card for Mac Pro - No Additional Power Connection Needed

Edit 10 FEB 2017====================================================So I recently spent £130 on an expensive USB3 card Sonnnet Allegro Pro thinking it would be much better than the Inateck card.How wrong I was!Transfer speeds using a Sandisk 1tb SSD in a external USB3 case are the same between the 2 cards = approx 370Mb/sBoth cards exhibit the same " disk not ejected peoperly" problem on sleep.........Sonnet's explanation below::::::::: To minimize power usage during sleep, power is removed from PCIe cards. Because of this power-saving specification, a USB 2.0 or 3.0 PCIe card is unable to maintain USB port power during sleep. In OS X, this result in a storage device disconnect upon wake from sleep. The storage device will automatically remount, but the system reports a disconnect message. Because Mac OS X flushes all caches before sleeping, this disconnect should never result in any loss of data ::::::::::::Sonnet claim 4 independant usb3 controllers vs only 1 on the Inateck. This might be a benefit when moving datas between external SSDs but i use Seagate 5TB storage drives that max out at 120Mb/s so i'm never impacted by any potential loss of transfer speed.I bumped the review to 5 stars because now I realise this is the best value USB3 card that you can buy for your Mac Pro.I could have bought 4 Inateck cards for the price of 1 Sonnett!!!!!Edit 9 Oct 2016Inateck customer support has been excellent in trying to help me with the problems reported below. For this reason I upgraded from 3 star to a 4 star review.======================================== Original review below ====================================It installed easily into a Mac pro 4.1 and works fine with USB3 card reader, but, like other reviewers below, I get regular "disk ejected on sleep" errors when I use it with a SSD mounted in the Inatack usb3 hard drive enclosure (the plastic one with a on/off switch and blue light.)When in use the blue LED light on the external enclosure sometimes dims as though there is not enough electricity getting to the enclosure??? I mean "dim" not flicker like when data is being accessed!Looking a the mac pro tech specs each PCI-e slot can supply 75W of power per slot, I would think this would be enough power to supply 900milliWatts to an external hard drive, I wonder if the card has not been designed properly to take advantage of all the power supplied by the slot?I have several Inateck usb3 external drive enclosures fitted with SSDs and HDD and I have tested them all on a 2012 mac mini and 2013 mac pro and they all work perfectly on these computers, only on the old mac pro with this inateck 4 port pci-e card do I experience the "disk ejected on sleep" phenomenon, so the fault must lie with the PCI-e card.I tested this card on OSX10.11.6 and recently Mac OS Sierra GM pre-release.I have workarounds to the problem as follows:I use "Amphetamine app" to prevent computer sleep when I use software that accesses data on the external drive and "Mountain app" which automatically un-mounts and remounts the hard drive when the computer sleeps and wakes.I have not tested any drives with external power supplies.My Lexar USB3 card reader works fine.

Fitting this card into my Apple Mac Pro 4.1 (early 2009) running Mac OS X 10.11.1 El Capitan was simple and it appeared to work correctly at first. However, I soon ran into two problems:-1) When the Mac wakes after sleep it thinks any drives plugged into the card have been ejected improperly.2) The speeds being seen are nothing like I was expecting for USB3. I tested this by transferring data from my internal hard drive to a USB3 drive connected to an existing USB2 port on my Mac Pro and it took 106 seconds. I did the test again with the same data and the same USB3 drive but this time connected to a USB3 port on this card and it took 79 seconds. So faster, but I was expecting it to be much faster.I bought this card partly on the basis of other good reviews from Mac Pro owners who said it worked. I have since seen another reviewer from a year ago who had the same problem with drives being ejected improperly and a response from the manufacturer stating that "this after sleep mode is a technical limitation for now and we are working on it". They obviously have not solved the problem yet. I have tried two different slots (Slot 2 & Slot 4) in my Mac Pro with the same result.I have decided not to return this card as the extra 4 USB ports on my Mac Pro will come in handy for non drive peripheral devices. The speed issue is now irrelevant to me as I will not be connecting hard drives to it given the sleep issue. I just can't understand why the majority of other Mac Pro owners who have reviewed the item appear to be having no "sleep issues".++++++++++++++++++++++++++++++++++++++++++++++++Since writing this review Inateck have been in touch and suggested I try a different drive and cable. I was able to transfer 1.19GB of data to an external drive in 42 sec when connected to a USB2 port and the same data took only 18 sec when connected to the Inateck card. A considerable improvement. On this basis I have increased my rating from 2 stars to 3 stars.The problem relating to connected drives when using sleep mode is definitely a drawback for me and means that I will continue to have my external drive connected to a USB2 port. It is for this reason that I have not rated it higher than 3 stars.

Despite the listing saying this only works up to 10.9.5, this is working perfectly under High Sierra.Unfortunately the item arrived with a crooked mounting plate which prevented it being inserted into the PCI-E bay. Luckily I have a vice so was able to bend it into the correct shape, and couldn't be bothered with going through the returns procedure.Also, it certainly does cause the onboard Mac Pro bluetooth to cease functioning due to excessive RF interference. This is true of all USB3.0 cards, so not a specific criticism of this model. I purchased the ASUS BT400 USB dongle and forced that as the default bluetooth connection in Terminal - this completely solved the interference issue AND upgraded the inbuilt bluetooth in the Mac from version 1 to version 4.As this product only has one controller for all 4 ports, if you run multiple high speed transfer devices through the card simultaneously, they all share bandwidth so will hit a speed bottleneck. But this works perfectly well for me, running just a single external SSD scratch disk at full speed at any one time.Overall, its a very good low cost solution for bringing USB3.0 capability to a pimped out 5.1 Mac Pro!