Please note: The compatibility between the 10G network card and some motherboards needs to be tested. Incompatible motherboards usually do not start or are not recognized by the system. Desktop motherboards prioritize the use of PCIE x 8/x16 slots managed by Nanqiao. Regarding X540 network cards: Win7 Win8 Win 10 11 requires driver installation. (Note!!! MAC PC is not supported!!! To install Linux, a professional is required. If you are not familiar, please do not buy!!) Supported systems: Windows Server 2012R220620192022. VMware Essi 6.5/VMware Essi 6.7/VMware Essi 7.0Redhat 7.6 64 bit/Redhat 7.7 64 bit/Redhat 7.8 64 bit/Redhat 7.9 64 bit/Redhat 8.1 64 bit/Redhat 8.2 64 bit/Redhat 8.3 64 bit/Use 12.5 64 bit/Suse 15.2 64 bit/Suse 15.3 64 bit/Ubuntu Desktop 18.04 64 bit/Ubuntu Desktop 20.04 64 bit. Sharing usage experience. B75, B85, and H67 cannot be used. (J3160, B360, Q370, X570E, H410, X58, X99, C612, Z97, HPZ440, Asus X470, verified to be usable. There are more unconfirmed motherboards, please leave a message and share.)