Axiom PCIE3-2SFP28-AX. Host interface: PCIe, Fiber optic connector: SFP28. Purpose: Server, Cooling type: Passive, LED indicators: Link. Processor manufacturer: Intel, Data transfer rate (max): 25 Gbit/s. Windows operating systems supported: Windows 10, Windows 7 x64, Windows 8, Windows 8.1, Linux operating systems supported: Kernel 2.6.33, Server operating systems supported: Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2. Width: 0.512" (13 mm), Depth: 2.68" (68 mm), Height: 6.5" (165 mm)