There is Dell TB19 firmware available that is installable via fwupdmgr on Linux: https://www.dell.com/support/home/en-bm/drivers/driversdetails?driverid=cwcf9&oscode=rhl80&productcode=dell-wd19tb-dock
There is Dell TB19 firmware available that is installable via fwupdmgr on Linux: https:/ /www.dell. com/support/ home/en- bm/drivers/ driversdetails? driverid= cwcf9&oscode= rhl80&productco de=dell- wd19tb- dock