When I connect my laptop computer to my router via 5G, the download speed is about a 100 Mbps slower than when I connct directly to my T-Mobile gateway and is about 150 Mbps slower when connected at 6

I'm trying to get my new router working. When I connect an external hard drive to the USB port, I can see it in the router software. When I try to access it on either my Window 10 computer (via hardwi