Syba 2.5 Gigabit Ethernet PCIe NIC Review | ServeTheHome
HP Aquantia NBASE-T 5GbE PCIe NIC (1PM63AA)
Amazon.com: 2.5GBase-T PCIe Network Adapter with 1 Port, 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support Windows Server/Windows/Linux, Standard and Low-Profile Brackets Included: Computers & Accessories