Original 700699-B21 700697-001 701525-001 561FLR 10G Ethernet 10GB 2 Port 561FLR-T Adapter Dual Port Network Card 561FLRT - AliExpress
StarTech.com Ethernet Network adapter card - PCI - EN, Fast EN, Gigabit EN - 10Base-T, 100Base-TX, 1000Base-T - Add a 10/100/1000Mbps Ethernet port to any PC through a PCI slot - pci
Media Converter, 10Base-T RJ45 to 10Base-2 Thinnet Coax BNC - LCTP-10BT-10B2
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