The new Merlin is just the new Merlin firmware (a running firmware of the router). Router support means that Meilin firmware can be refreshed, and you can use the router without the original official firmware after brushing, mainly because Meilin firmware is more convenient to set and use and has more functions.

5g router:

The parameters of routers such as 5G and 2.4G refer to the frequency bands used by wireless signals. The transmission bandwidth supported by 2.4G is relatively narrow, and the natural transmission speed is slow, while the transmission bandwidth of 5G band is more than five times that of 2.4G, and of course the transmission speed is much faster than 2.4G. ..

5G Wi-Fi (802.1/ac) refers to the fifth generation Wi-Fi transmission technology, which runs in the 5Ghz radio wave band (there is a misunderstanding here, not that Wi-Fi running in the 5Ghz band is 5G Wi-Fi, and the standard of Wi-Fi protocol running in the 5Ghz band includes 802./kloc-0.