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Thunderbolt PCI-e 2 card can´t recognize

HP Recommended
HP Z820 Workstation
Microsoft Windows 7 (64-bit)

Tunderbolt PCI-2 card installed on my Z820 Win7 64,

tried the installer from delivered CD - the thunderbold software shows up - but in the hardware managment - was a yellow flag on the controller of the Thunderbold controller code 12 -  then disappeard

followed the tips here in the forum - no success

-installed the new sp74948 driver

-deinstalled all other PCI-e cards without the Videocard

-tried to disable the Bios of the other PCI Lanes

-reinstalles everything


TB PCI controller disappeared in the devicemanagment - no chance to see any TB harddrive at the Diskmanagment.

any idea??


best R.



Z820 32GB RAM 512 GB Systemdrive SSD WIN 7 (64)

PCIe slot 1 free

PCIe slot 2 free

PCIe slot 3 NVME SSD HP Systemdrive 

PCIe slot 4 free

Pcie Slot 5 Thunderbolt PCIe 2 card

Pcie Slot 6 free


contoller showing up in the controllmanager

SAS 600+

SAS 600

LFI Mustang

- no Thunderbird 2 (if so - with a yellow Flag code 12)


Thunderbolt 2 - 3 Adapter Apple


Tunderbolt 3 Pegasus Win 24TB (clean installation with support of Pegasus)


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HP Recommended

HP hat wirklich keinen Service

hab mehrmals angerufen - in Europa die UK Nummer ist nicht mehr existent. In Amerika konnte man keinen Case aufmachen - Rückrufe versprochen nicht gehalten. Online kann man auch keinen Case aufmachen weil es auf den Thunderbolt Karten Seriennummern gibt die nicht im Garantiecheck eingepflegt sind. Was für ein Mist.


Problem gelöst:

HP installiert in der Tray unten ein Thunderbolt Tool "Thunderbolt TM Software". Dort in Einstellungen gibt es zwei Reiter.

"Anschluss von Geräten" und "Thunderbolt Netzwerktechnik" Bei Netzwerktechnik muss ein Häkchen bei // Netzwerkanschlüsse ohne Zustimmung des Benutzers gestatten


dann klappts auch mit den externen Festplatten .


Alles andere mit Code 12 und kram ist missführend.


Viel Spass

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