4.
Compatible Systems: 1. Windows Server 2022, 2019, 2016, 2012R2, 2012 and Windows 11, 10, 8. x, 7 (32/64bit). 2. Linux kernels drivers IXGBE. 3. RHEL 7.9, RHEL 8.4 / 8.5, RHEL 7.0 to 7.8 and 8.0 to 8.3. 4, SLES 12 SP5, SLES 15 SP3, SLES 12 SP4 and previous, 15 SP2 and previous. 5, Ubuntu 18.04 and later, Ubuntu 20.04, and later. 6. FreeBSD 12.2, 13, 12.1 and previous.
5.
ATTENTION: 1. PCIE X8 interface design, works on PCIE X8, X16 sot. Users must check if PCs have active and open PCIE X16 (X8 Lane or X16 Lane) slot before purchase. 2. Low profile bracket in the package and full height bracket mounted on this network adapter. Users need change to low profile bracket if using slim PCs. 3. Users must make sure the PCIE X16 slot have X8 or X16 lane, or the X540T2 cannot get expected 2X 10GbE max speed.