How to enable USB via Thunderbolt AIC on z370 Pro4

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   Good morning,

I have the following issue: my USB keyboard does not work in a pre-boot if it is connected via Thunderbolt.

My setup: I have a Z370 Pro4 with the Tunderbolt 3 AIC Rev 2.0 card in my PCIE4 slot. On the Port 1 of my Thunderbolt AIC Card, I have plugged in the Keninsgton DS5200T Docking Station and in the docking stations USB ports I have plugged in my devices.

Now all work well once Windows has started, but in the pre-boot environment when I need to enter a password before Windows is booting the keyboard is dead.

In my UEFI I have activated "Secure" as the security status for the Tunderbolt security settings and in Windows the Kinsington dockingstation is accepted as a secure device.

How can I now access my USB devices connected via Thunderbolt in pre-boot?

Thanks
Andreas

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AndreasD Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 26 Mar 2020 Status: Offline Points: 4	Post Options Post Reply Quote AndreasD Report Post Thanks(0) Quote Reply Topic: How to enable USB via Thunderbolt AIC on z370 Pro4 Posted: 26 Mar 2020 at 5:25pm
	Good morning, I have the following issue: my USB keyboard does not work in a pre-boot if it is connected via Thunderbolt. My setup: I have a Z370 Pro4 with the Tunderbolt 3 AIC Rev 2.0 card in my PCIE4 slot. On the Port 1 of my Thunderbolt AIC Card, I have plugged in the Keninsgton DS5200T Docking Station and in the docking stations USB ports I have plugged in my devices. Now all work well once Windows has started, but in the pre-boot environment when I need to enter a password before Windows is booting the keyboard is dead. In my UEFI I have activated "Secure" as the security status for the Tunderbolt security settings and in Windows the Kinsington dockingstation is accepted as a secure device. How can I now access my USB devices connected via Thunderbolt in pre-boot? Thanks Andreas

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8787	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 27 Mar 2020 at 8:17pm
	Dear AndreasD, Thank you or posting your query to ASRock forum. Regarding your question, the thunderbolt driver will start functioning once the system goes into the OS. During pre-boot(also called BIOS), since there are no thunderbolt drivers USB devices might not work. With thanks, ASRock TSD Edited by ASRock_TSD - 27 Mar 2020 at 8:18pm

AndreasD Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 26 Mar 2020 Status: Offline Points: 4	Post Options Post Reply Quote AndreasD Report Post Thanks(0) Quote Reply Posted: 28 Mar 2020 at 1:39am
	Hi TSD, thanks for the reply. But that is no solution. How can this be? All other mainboard suppliers I know have the option,, even the cheap ones, no? There must be a way? Thanks Andreas