Amazon.com: StarTech.com USB 3.0 to Dual Port Gigabit Ethernet Adapter w/USB Port - 10/100/100 - USB Gigabit LAN Network NIC Adapter (USB32000SPT) : Electronics
24-Port Ethernet Managed SFP Switch, 24x GE SFP Ports, 8x GE RJ45 with 6x 10GE SFP+ Uplinks, Support Stacking