For anyone interested, I made some tests for the USB/WiFi interference. I kept the MacBook (a 15" model) connected to the 2.4GHz band of the router; physically close to it. The connection quality with no USB 3 connected devices was as follows: - RSSI: -50 dBm - Noise: -95 dBm Using this LAN adapter (top left port): - RSSI: -49 dBm - Noise: -75 dBm (2.4Ghz band is unusable, no webpages load) Top right port: - RSSI: -50 dBm - Noise: -72 dBm (OSX automatically reconnects to 5 GHz) Other ports also don't work. Using this USB-C hub (top left port): - RSSI: -51 dBm - Noise: -71 dBm (2.4Ghz band is unusable, no webpages load) Strangely enough, other ports work fine with this hub, with a Noise of -80 or so. So it would appear the top-left port is the most sensitive to interference. Using the Apple USB-C -> USB-A adapter and a Transcend USB 3 thumb drive (top left port): - RSSI: -52 dBm - Noise: -78 dBm (quite a bit of interference, but it doesn't disconnect) Top right port: - RSSI: -52 dBm - Noise: -84 dBm Using the official adapter and a USB 3.0 Toshiba Hard Drive I get no noticeable interference: - RSSI: -53 dBm - Noise: -92 dBm I'm pretty sure Apple cheaped out on the USB-C ports and didn't add (enough) shielding (does this happen with previous years models?).