For XenServer 6.5, driver version is 1.4.3.0 (build 125.0.1604262218000.199.081) Version:1.4; For Citrix XenServer 7.6.0, firmware/software version tested: 1.6.0.0; For Citrix Hypervisor 8.0.0, firmware/software version tested: 1.6.0.0;