100Base-TX PCI Fast Ethernet Card Realtek chipset (NIC-R1)
EnLabs USB 2.0 to Network Converter, USB 2.0 to 10/100 Mbps Fast RJ45 Ethernet LAN Network Adapter(REALTEK RTL8152B chipset,Macbook, Chromebook, Windows 8.1 and More, Plug and Play) - Newegg.com
Realtek RTL8139D 10/100Mbps PCI Fast Ethernet Adapter | eBay