The problem with the product on my computer was that Win 8.1 recognized it as a (Logitech Unifying USB Receiver). New USB card drivers were ignored by Windows due to this mistaken identity. Inateck needs to fix this.

I came up with the following work around;

Go to Start, Control Panel, Device Manager, then select Universal Serial Bus controllers
Select the (Logitech Unifying USB) item with the (yellow triangle error notice) and double click to open it.

Select (Driver) tab, (Update Driver), (Browse my computer for driver), select (Let me pick from a list) and finally select (USB Composite Device) and then okay.

The product now works

Once I got the driver to work the card operated without incident. Tested it with my fastest USB 3.0 device, a SSD with a USB 3 adapter (see results in photo). Its speed was limited by the SSD to 188mb/s.

Supplies a decent amount of current but not enough to charge my phone at full amperage. The maximum current it could provide was 0.71amps and that dropped the voltage from 5.00v to 4.68v. Even at that low voltage I was able to transfer files to and from the computer.

Overall a good product that has two (2) major flaws. They are:

1) The supplied cables to connect power to the card are ridiculously short. Just refer to the 'paid' reviewer's review who received the product for little to no cost (Josh H.) and view his video and see when he connects the power cable to to the card it is stretched and barely fits. This necessitated me to purchase a cord (for $10.00) to make the power work. Even though the reviewer, Josh states in his review that you do not need power unless you are charging devices do not believe it. No matter what I connected to this card the system would not recognize it. Although the device manager in Windows 10 recognized the card with no issues it would not recognize any devices without power.

2) The web site for Inateck has to be, hands down, one of the worst support sites that I have seen in the over 30 years of being in IT. Finding the drivers was painful.

Now that the two issues are dealt with a little background. I am installing this card on a Dell Optiplex 980 tower with Windows 10. It is now working correctly but what should have been a 10 minute install turned out to be a many hours install needlessly.

Overall I am satisfied (so far but will come back to give a longer term update) and it would have been 5 stars but 4 stars is all I can give it.

I managed to get two of these cards installed on my ASUS Z-97 Pro motherboard. Both work well and now I have 10 external USB 3.0 ports and 4 internal USB 3.0 ports.

I use the internal ports for things such as USB Bluetooth dongle, Logitech USB receiver (mouse, keyboard), a small hard drive mounted inside my PC case. The external ports work flawlessly and I've had no problems with them.

If you have a motherboard similar to the ASUS Z-97 Pro and have a SATA drive plugged into the internal SATA Express port, then note that one of your PCIe slots will not function and you will not be able to use that PCIe slot as the SATA Express drive is taking up the data lane for that PCIe slot. This can be very frustrating if you aren't aware of this situation .

To install one card it is straight forward and pretty much self explanatory. To install multiple cards you will need an open PCIe (and functioning) slot for each additional card and a power supply. I suggest a multi-SATA power cable. Before installing the second card, if you haven't already installed the first card do so and install the drivers and make sure it is working, then turn off the computer and slot in the second card and turn on the computer. You do not need to install the drivers again. The original drivers for the first card should recognize and configure the second card as well. You might receive a minor error while the computer is configuring the drivers for the second card. It shouldn't affect the functioning of the card.

During the installation of the second card, once I turned on my computer, my computer automatically recognized the card and installed drivers for it automatically (which were the same drivers already installed and hence the error).

Once you have the second card working, verify both cards are functioning properly.

I don't think the drivers were really designed for multiple cards in mind, but they seem to work under Windows 7 64-bit no problem. As for Windows 10 I don't know.

I deducted a star from my review because the drivers haven't been updated since 2014 and are likely out of date, especially for Windows 10.

So, that is my experience with multi-card installation and my two cards are identical cards with identical chipsets. Using different cards with differing chipsets might yield differing results.

I hope this helps anyone trying to get two or more cards working.

---------------update---------------------------
As of yesterday (1/27/17) after updating the drivers ( to 3.6.9.0 8/2/16), the external ports (all 5 ports on both cards) no longer work. The internal ports (2 on each card) still work fine, but no external ports work at all. Trying to diagnose the issue. I will update when and if I find a fix.

--------------update -----------------------------
After some tinkering with the cards (installing and uninstalling and restarting the computer a few dozen times) I was able to determine the cause of the problem. It appears that when I updated the drivers to version 3.6.9.0 8/2/16 that the old drivers were left behind and still active. I imagine some sort of conflict was being caused with the old drivers and new drivers trying to control the same cards at the same time. Anyhow, the solution I found was to user Driver Boost 4 to uninstall all the drivers (old and new) (while removing the drivers you will find about 7 per card and they all contain the name 'Frisco' in their description). Once all the drivers were removed I removed both cards from my PCI slots and started my computer absent of the cards. Then registry cleaned my registry to get rid of any lingering registry entries. I then shut down the computer, and installed only one card then turned on the computer. Once the desktop appeared the card was present but no drivers could be found for it. That was a positive sign. So I installed the newest drivers again (3.6.9.0). I removed all the USB cables from the external ports and reconnected them one by one and they came back to life and all my devices worked.

For the second card, I then shut down the computer and installed the second card (connecting power and placing in a seperate PCI slot). Then I restarted the computer. Once the desktop came up the computer automatically installed the drivers for the second card as it recognized that it uses the identical drivers to the first card. I connected my USB cables to the second card and everything worked as expected.

So, the cards are very good, however, for some reason the new drivers did not uninstall the old drivers properly and that is what caused my problems.

I now have one of these in 4 of the computers here, and it was no surprise that they work well in two Windows boxes. But the happy surprise was that they work well in 2 Linux machines as well. I can't really comment on their performance in win7 beyond that (I work on LInux and Unix systems and don't actually use windows more than absolutely necessary for my job).

However, I had been hesitant to try this board in a Linux machine due to one or two bad reviews (on another site) from over a year ago.

I am very happy to report that they do work on Linux, however, and I have added one of these boards to to two machines which already have working "native" USB3 headers and ports on the motherboard (they give extra ports).

The speed is a little slower than the ports on the MBs, but it is still far faster than the USB2.x ports in any case, and I use them primarily for printers, scanners, etc. - things where the speed is not nearly as critical (i.e. things which originally expected to connect to a USB2.0 port).

So far I have seen no problems with any of them, and I am using the headers on 3 of them to connect to ports on the front of the machine.

I am happy with these, and I would recommend them (and have already done so) to professional colleagues, family, and friends.