This speed test reflects the connection speed between my Microsoft Surface Pro connected to the Google Fiber Network Box via a 10/100/1000 Gigabit Ethernet Adapter connected to the Microsoft Surface pro through a USB 3.0 Hub.
download speed: 535 mbps
upload speed: 374 mbps
Photos of the re-created Microsoft Surface Pro set-up are below (click to enlarge):
The gigabit ethernet adapter is an AmazonBasics USB 3.0 to 10/100/1000 Gigabit Ethernet Adapter, and the USB 3.0 hub is a Sabrent 4-Port USB 3.0 Hub with Individual Power Switches and LEDs that I purchased from Amazon.com Links to both are below