Pcie X1 Rtl8125b Server Network Card 2.5gbe Multi Gigabit Network Card Pcie Gigabit Ethernet Adapter - Network Cards - AliExpress
QNAP Launches Single-port 2.5GbE PCIe Card for NAS and PC | QNAP
New 5GbE PCIe cards QXG-5G1T, QXG-5G2T and QXG-5G4T from Qnap – NAS Compares
QNAP QXG-5G2T-111C dual port 5GbE multi-Gig expansion card;Aquantia AQC111C;Gen2 x 2;low profile - Newegg.com
StarTech.com 5GbE USB A to Ethernet Adapter - NBASE-T NIC - USB 3.0 Type A 2.5 GbE /5 GbE Multi Speed Gigabit Network USB 3.1 to RJ45/LAN - USB A to Ethernet