Unitek via Newegg offers its Unitek USB 2.0 to RJ45 LAN Wired Ethernet Network Adapter in Black for $2.49 with free shipping. That's a slight drop from our mention from three weeks and the lowest price we've seen. (It's also $2 under the best deal we could find for a similar adapter elsewhere.) It supports crossover detection, auto-correction, Wake-on-LAN (WOL), and IPv4/IPv6 protocols.