Compatible RS485 Adaptors

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RS485 - USB

Generic RS485 - USB

Amazon UK Link1, Berrybase Link1

RS485 - Ethernet

Whatever adapter you buy, make sure it supports modbus transmission. Transparent adapters that do not look into the modbus protocol cannot send the packages to the correct modbus slave.

Waveshare RS485 to RJ45 Ethernet DIN Rail Mount

More information on this adapter can be found under Installation Notes

Amazon UK Link1 , Amazon UK Link2 , Amazon UK Link3

ZLAN5843A 8-port RS232/485 serial port to Ethernet

AliExpress

Untested but should work according to the specs...

USR-TCP232-410S RS232 / RS485 Serial to Ethernet Adapter

Amazon UK Link 1

Should work but potentially more hassle...

USR-TCP232-304 only supports a Virtual Com Port?

As this Model appears to only gives you a Virtual Com Port it might prove difficult to pass into Home Assistant running in a VM or Home Assistant OS?

Amazon UK Link1