I want my Mac to work as fast as my PC where the PC adapter link speed is configurable and I get about 300 mbps on wifi and 1GB on ethernet, but I cannot find where to configure that on my Macbook (High Sierra) and so I am stuck well under 100 Mbps at best.
MacBook Air, macOS High Sierra (10.13.5)
Unless Microsoft has changed something, the link speed you see is the max theoretical speed supported by your hardware, not your actual speed. They may have some widget that shows the actual connection speed, but I don't know where it is.
To get close to GigaBit ethernet, you need a cat 6 cable that is fairly short.
Your Mac will auto-negotiate speed with the router. If your cable is insufficiently "clean" you will only get 100baseT vice 1000baseT because that is all the cable can support without significant errors.
Hold the option key and click on the wifi icon in the upper right menubar.
Here you can see your Network— and make changes. 2.4Ghz is slower but reaches further, 5GHz is faster but does not reach as far.
The Channel information will show you your connection speed to your router.
Dual band router will give you a choice 2.4 or 5GHz
Simultaneous Dual band router should automatically connect you to the fastest "most reliable" link speed.
And yes, I get several hundred (300+ Mbps) on Wifi
So, you've measured an actual 300Mbps on WiFi?
How do I configure the link speed of the adapter?
