PCI-E X8 Lane is suitable for both PCI-E X8 and PCI-E X16 slots. Dual SFP+ Port Fiber Optic Network Card is compatible with Windows (XP/Vista/7/8/8.1/10), Windows server (2003/R2 2008/R2 2012/R22016/R2 2019/R2), CentOS/RHEL, Ubuntu, FreeBSD, Linux, Vmware support for ESXi 5.
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