Is this your current network configuration (line diagram)?
ISP === Fiber ===> Huawei Modem/Router [LAN Ports] ----Ethernet cable ----> Wired PCs/devices and ~~~~ wireless ~~~~> PCs/Devices
Feel free to edit and correct the line diagram as necessary.
And you wish to extend the number of wired connections to add more wired devices - correct?
More information needed.