I've just bought two NUC6CAYH.
The initial BIOS version was 38.
I installed 4 Gb RAM and a 120Gb SSD.
Then I installed Win10 Pro and I updated all the drivers using Windows Update.
Finally I installed the Intel DSA utility to verify other updates.
The utility suggested three updates: graphic driver, wifi driver and the bios.
I installed everything and the process completed without errors.
Now the BIOS version is 45.
The system is running fine but when I connect a USB key 3.0 to any usb port (I tried many USB flash drive that worked perfectly before the update) the system completely ignore it.
If the USB key is compatible only with 2.0 standard, there are no problem.
Even changing settings in BIOS, I couldn't change anything.
Did I do something wrong? Did I forget something? Or this is a serious bug in version 45 of the bios?
Can you help to solve the problem? Thanks.
Addendum 1: the same flash drives USB 3.0 that didn't work directly connected to the NUC USB ports, through a USB 2.0 extension cable work!
An extension cable like the one in the below picture. This confirms that the problem is strictly related to USB 3.0 support.
added the addendum 1
I understand that you are having problems when connecting a USB 3.0 device, I apologize for any inconveniences this may cause.
Regarding this, what I could recommend you is to try to do a BIOS recovery as there could have been a problem when updating the BIOS. Here is a link so you can download the latest .bio file in order to try with the recovery:
Once you have the .bio file, you need to check the following instructions in order to do the BIOS recovery:
I hope you find this helpful.
Thanks for the answer.
So you suggest to do a BIOS recovery using the F4 key and the BIOS version actually installed?
I'll try this procedure and I'll report the result.
Anyway I checked every step of the update procedure, BIOS included, there were no errors for both NUC but the same result: I can't access USB 3.0 flash drives after the update.
I'm very sorry but nothing to do, even using the recovery procedure, the NUC continues to have problems with USB 3.0 devices.
I tried both procedures (holding down the power button and removing the safety jumper) but nothing changed.
The serial numbers of the two NUC are of this type: G6AY744000(xx)
(xx) the two final characters differ in the two models (they are two letters), the remaining part of the serial number is identical.
I ordered another NUC6CAYH and surely I'll not update the BIOS to version 45, I'm pretty sure that this is not a pocedural problem but a serious BIOS bug.
Yes I can, the Intel USB 3.0 Host Controller is present and is working fine with USB 2.0 devices but this is not a driver problem.
I can't see any bootable USB flash drives pressing F10 key and accessing the boot menu, if the USB device is 3.0.
No problem booting from USB 2.0 flash drives.
This is a known issue. A fix for it was introduced in BIOS 46, but this BIOS is no longer available (due to issues in microcode fix for Spectre Vulnerability). I presume that, when this BIOS is re-released (with the new version of the Spectre microcode fix), the fix for this USB 3.0 bug will be included.
I haven't found any information about this supposed known issue...
Searching the internet I found the BIOS version 47 (no longer available from Intel site) and in the release notes there is only a fix related to the read/write speed on USB 3.0 drives that would work like USB 2.0.
This is not my case.
I would like to know if someone that own a NUC6CAYH with 45 BIOS version installed, is using smoothly USB 3.0 flash drives connected directly to the USB ports of the NUC, I would be very surprised...
A last thing: I can't understand why Intel has removed the 47 version to release a fix for Spectre/Meltdown. Surely the 45 version is affected from these bugs in the same way...
No problem here (Except the USB 2 speeds) using SanDisk Ultra USB 3.0
Version 047 of the BIOS was removed because it 'could' introduce reboot issues due to the patched microcodes for the Spectre/Meltdown vulnerabilities
Btw, i think Version 047 still is in the https://downloadcenter.intel.com/product/95062/Intel-NUC-Kit-NUC6CAYH download bundle, at least it still was when i downloaded it...so pm me if you like to give it a try
Thank you for the report.
I tried several usb 3.0 Kingston and Verbatim, but at the moment I don't have a Sandisk Ultra USB 3.0.
In the https://downloadcenter.intel.com/product/95062/Intel-NUC-Kit-NUC6CAYH download bundle there is the BIOS version 45, Intel has removed also from there version 47.
However, I prefer to avoid updating the BIOS with a version 47 obtained from alternative sites, I will wait for a new release, hoping that finally everything works properly.
for RvdH: a little question, do you remember the the BIOS version initially installed when you bought your NUC6CAYH? (In my case 38 was updated to 45)
Sorry, I don't remember the original bios version when it came in but it was a version before 0045 as it still suffered from the flashing screen bug...that is exactly why i upgraded immediately
Thanks for the info.
I compared the version (re)released with the one I found googling and they are absolutely identical.
This means that the version 47 has not been modified.
I'm not going to update the BIOS of the newly purchased NUC6CAYH (the third). With the version 38 everything seems to work fine.
As soon as possible, I will try to update from 45 to 47 one of the NUC that have been already updated from 38 to 45 and that are no longer able to read USB flash drives 3.0.
I'll report the result.
I really doubt they are identical
First Release (AYAPLCEL.86A.0047.EB.EXE)
I tested only the .bio file, not the self-extracting .exe
AY0047.bio downloadable today:
AY0047.bio found some days ago:
I think they are the same...
Yes, this is actually the exact same BIOS that was posted previously. It was inadvertently (and unnecessarily) taken down while they were taking down BIOSs for other NUC models that will require subsequent microcode updates.
Let us know if this addresses all of these USB 3.0 issues (it should).
Today (finally) I made some tests on the NUC6CAYH with BIOS 45 installed.I connected the Verbatim Store 'n' Go 16 GB USB 3.0 directly to the USB port of the NUC and the system ignored it completely as I expected.I also tried with a Kingston DataTraveler microDuo 16 GB USB 3.0 and surprisingly, it worked perfectly.So either the problem occurs only with some devices, or the microDuo is actually a USB 2.0...
At this point I decided to install the update to the BIOS version 47.
After the update the system is able to read all of my flash drives USB 3.0
So, problem solved, but it would be appropriate to insert in the list of known problems of the BIOS version 45, this too.
Thanks for the support.
For most folks, there are no issues using any specific USB 3.0 devices - they just connect as USB 2.0 devices.
Fix is in BIOS 47, which is again available.
A small update:
if I insert an 8Gb Kingston DataTraveler 111 or a 16 Gb Verbatim Store 'n' Go V3 in any USB port while the system runs Windows 10, there are no problems.
On the contrary, if I try to use the same device as a boot device, it works only if I use an USB 2.0 extension cable.
Without that extension cable, the BIOS completely ignore the flash drive.
The same problem occurs on all four NUC6CAYHs I've worked on, obviously all with BIOS updated to version 47.