No UASP Driver in Windows 10??

So I recently installed Windows 10 to get that sweet usb uasp 3.0 spec goodness (This was the only reason I upgraded). With native support, I thought that nothing could go wrong. Alas, every other part of the upgrade went great BUT for the UASP driver, which appears to be nonexistent. I checked device manager first and went under storage controllers and there is no UAS driver, for whatever reason. Sure enough, when I run a speed test on my sandisk extreme usb 3.0 flash drive with UASP support, the speed is unchanged from my windows 7 days. What in the world is going on??

Above is a picture illustrating what I am talking about.

bro67 said:

Microsoft and the hardware manufacturers are still working out the bugs is what is going on.

I would agree with you except that hours of internet searching has led to no one appearing to suffer from the same issue in any earlier builds or the current one.

I see you have an ASUS MB so you can try ASUS USB 3.0 Boost and it should show what your drive is set to and also set it to what you want. I have an older WD My Passport and it gives me choices of Normal or Turbo so I assume it is not USAP compatible. It is also available with ASUS AI Suite 3. Read about it here:

http://event.asus.com/mb/2010/The_Best_USB3_Experience/The_UASP_For_USB3.0.htm

Are you sure your Sandisk supports UASP? I looked up Sandisk UASP and they don't mention it anywhere. Your storage device has to support UASP.

Geneo said:

Are you sure your Sandisk supports UASP? I looked up Sandisk UASP and they don't mention it anywhere. Your storage device has to support UASP.

Yes, the latest model (CZ80) of the Sandisk USB 3.0 extreme flash drive supports UASP. Well it's supposed to anyway.

I have it working with my external disk enclosures that use Asmedia 2105 and 2115 chips.

Weird, Sandisk's web page for the CZ80 doesn't mention UASP.

Hello Jay,

Well to begin with, I'm surprised nobody noticed before. You are looking at the wrong place.

You are concerned about UASP support on Windows 10.

When we are talking about UASP "native support" we are talking about supporting USB3 controllers. The section you opened and that is shown in your picture is for "STORAGE controllers". You may want to be looking into the "UNIVERSAL SERIAL BUS CONTROLLERS" section, further down, not the one you opened here.

The list of usb controllers installed on your system will show up there. Unfortunately, we can't see which usb controllers you have. There is no indication of which exact motherboard your have, or if it is a laptop or a desktop computer.

If you have no USB3 controllers installed on your system, I see no reason why windows would try to install or use them. That part is not clear.

UASP support means if windows 10 finds a compatible usb3 controller it will use uasp drivers. It won't do anything if it doesn't find such controllers. It cannot use devices it doesn't find.

Now, investigating further, since your profile contains the specs for your system (Asus Maximus VI Formula)...

Your motherboard has the Intel Z87 chipset, which comes with Intel native USB3 chipset (4 ports) and you also have another USB3 controller (ASMedia USB3 controller, another 4 ports).

If you look under the correct section in Device manager (usb controllers) I'm 99.9% sure you will find the controllers listed there and they will likely be using UASP drivers, at least the Intel one would.

"when I run a speed test on my sandisk extreme usb 3.0 flash drive with UASP support, the speed is unchanged from my windows 7 days..."

Well, again, you don't specify which size this drive is. According to Sandisk website official specs:

Storage: 16 GB
Read Speed: up to 245 MB/s
Write Speed: up to 50MB/s

Storage: 32 GB
Read Speed: up to 245 MB/s
Write Speed: up to 100MB/s

Storage: 64 GB
Read Speed: up to 245 MB/s
Write Speed: up to 190MB/s

These specifications may also vary depending on which OS, driver version and controller type they were taken on (the website doesn't specify, but it was SOME usb3 controller).

To do accurate speed tests, you may Google and download CrystalDiskMark.

Run the same test with the same parameters while connecting the drive to the 3 different controllers you have: Intel usb3, Asmedia usb3 and Intel USB2.

You SHOULD see differences in the speed transfers from USB2 and USB3 on either controller, most notably in the random sections and longer queue depths. Sustained read should be pretty similar across the board on both usb3 controllers.

You shouldn't see speeds going over 60MB/s on the USB2 controller.

Any other differences between read and write on the USB controllers should be attainable to the flash drive itself and NOT the interfaces. You should get results within the ranges of the manufacturer specifications above.

Another important note. To benefit from UASP we must understand what it really is and what it brings new to the table in comparison with the older Bulk-only Transport used before.

In a nutshell: UASP is faster only under certain conditions. It enables command queing and out-of-order completions. That means in simple English it will reorder requests from multiple locations on the hard drive in a way that the heads have to travel less and instead of processing orders in first come first served basis with the heads traveling all over the place, it will do it based on whatever location is closer, we'll get there first, and from there to the closest one, and so on. That's what "out of order" means.

It also permits running multiple requests at once, instead of one after the other. Under the previous standard, no new requests could be initiated until the previous one was completed.

All the above implies that UASP is beneficial only in cases of simultaneous reading/writing activity on the drive, or in cases of multiple access of multiple files at the same time, or any combination thereof.

If your conclusion that you saw no appreciable difference with Windows 7 was based on sequential read/write, UASP won't really make much of a difference, and now you understand why. There is nothing multiple or concurrent going on, so it's not really doing anything.

Please, check Wikipedia for UASP for more details.

Hope this helps...
:)