Will the internet speed by divided between ethernet switch ports or will the speed be the same as original throughout?

jovy.combo07

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Jan 24, 2018
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Say I have a 20mb internet speed, then I have a 1000Mbit/s switch that has 5 ports, one is connected to my modem, and the other 4 ports are connected to my desktop and laptops. Will all the 4 ports receive 20mb speed or will the 20mb divided into the 4 ports?

Your help is highly appreciated,
Thanks!