WEME via Amazon offers the Alxum USB 3.0 Ethernet Network Adapter for $12.99. Coupon code "9WZJPXNX" cuts it to $4.94. Plus, Prime members receive free shipping. That's $2 under our December mention, $8 off list, and the lowest total price we could find. It features a USB 3.0 type A to RJ45 port, supporting speeds up to 1Gbps.