Why does the computer's Gigabit network card connect to the Gigabit router at a speed of only 100 megabytes?

You need to see if the WAN port and LAN port of Gigabit router are really Gigabit. Recently, you bought a wireless router, nominally full Gigabit, wireless Gigabit (this is a joke), WAN port and LAN port are Gigabit.

Who knows, when the telecom is 200M, when the optical cat is directly connected, the test has more than 200 MB, but when the router is connected, it is only 100MB, indicating that one or both of the router's WAN port and LAN port have not reached Gigabit.

Usually, two computers are directly interconnected. There is no network device in the middle, and two hubs are cascaded. In some aspects, network devices need crossover lines to connect (because only crossover lines are supported).

Extended data:

The USB interface of gigabit network card is 3.0, and the USB interface of general network card is 2.0. The difference is that the interface transmission rate of 3.0 is 10 times that of 2.0.

100M network card is a kind of network bandwidth, which refers to 100M optical fiber. The theoretical transmission speed of ordinary 100 Mbps network card is 100Mbps, and the actual conversion limit download speed is 12.5MB/s/s?

The unit of 100M is bps (bits per second), and this bit is bits. At the same time, this m is mathematically the sixth power of 100.

References:

Gigabit network card _ Baidu Encyclopedia