Another update: I purchased this USB-C to USB 3.0 hub with gigabit Ethernet:
Tek Republic TUN-310C USB Type-C 3 Port Hub with Gigabit Ethernet Network Adapter - Newegg.com
I connected it to the Lap Dock and hooked up a WD Passport drive that I have. Works like a charm. I also connected it to my router and turned off all wireless data. I can confirm that the Ethernet is working. I was getting 55 Mbps download speeds (the same as my wired desktop) via speedtest.net. I thought it would be a good opportunity to download some large app updates and podcasts
