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How- to prevent reboots with adapter plugged-into NUC Intel NUC Kit NUC8i7BEH with BIOS BECFL357.86A.0079

Intel NUC Kit NUC8i7BEH with BIOS BECFL357.86A.0079.

 

I use an adapter Apple A1790 Thunderbolt 3 (USB‑C) to Thunderbolt 2.

 

I use also an adapter Apple A1433 Thunderbolt 2 to Gigabit-Ethernet.

 

Both adapters chained makes an NIC capable of "AVB Audio Video Bridging" on Apple devices with TB3 ports.

 

If A1790 is plugged-in to NUC with cable TB2 to audio interface TB2 (MOTU 1248) the NUC regularly/constantly reboots after 40 seconds after shut-down and powering-off.

 

Also if A1790 connected to A1433 connected with patch cable to network switch the NUC regularly/constantly reboots after 40 seconds after shut-down and powering-off.

 

A1790 with an active connection plugged-in to NUC it is not possible to power-off the NUC anymore definitively. NUC reboots always after 40 seconds. Only unplugging the adapter shuts-down the NUC without rebooting again.

 

This is disabled in BIOS:

 

- Chipset SATA

- PCI config M.2 slot

- Wake from TB devices

- PCIe ASPM support

 

Boot devices disabled are:

 

- TB boot

- optical

- network boot

 

How to prevent reboots when adapter Apple A1790 with active connection is plugged-into NUC?

 

Attached SSU Scan Information

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Moderator
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AWERN4, Thank you for posting in the Intel® Communities Support.

 

In reference to your question, just to let you know, Apple does a lot of proprietary customizations on their products, those customizations include hardware, software and even drivers that currently are not validated by Intel®

Based on those details, we cannot guarantee the proper functionality of the Intel® components working along with Apple devices, meaning that when using those products combined they will work or might not work at all, compatibility between the parts also comes into play.

 

So, if the Intel® NUC Kit NUC8i7BEH works fine without using any Apple adapters, it indicates for Intel® that the unit is actually working fine.

 

As an alternative, you can always get in contact with Apple directly to verify if they might have further suggestions on this matter:

https://support.apple.com/contact

 

Any questions, please let me know.

 

Regards,

Albert R.

 

Intel Customer Support Technician

A Contingent Worker at Intel

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