Check your Ethernet connection and performance.
Check your Ethernet connection and performance.
I've consistently relied on Wi-Fi for my PC since it's too far from the modem for Ethernet. I'm planning a switch and want to verify if my motherboard's Ethernet slot is adequate. The Asus Z170 Pro Gaming features this description on its site. Will this work, or should I consider an internal adapter like the one linked?
Yes, the system features a gigabit interface built into the motherboard.
Components don't deteriorate like that. The Intel I219-V chip remains in many boards being produced today, and you won't achieve higher speeds simply because something is "more recent." If it were an older technology when gigabit LAN was just emerging, you might run into problems, but otherwise it should perform well.