i installed the server version on the nas from the qnap app center I am running ubuntu linux station on the nas also and when i installed the client on it i keeps getting error messages and cant run it modprob Fatal:module VHCI-hcd not found in directory /lib/modules/5.10.60-qnap
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The usbip drivers need to be compiled into the kernel which seems they are not (which is strange because standard ubuntu has them compiled in).
Anyway put standard ubuntu in "Virtualization Station" instead of using Linux station and run the virtualhere client in there.