I have one R9 390x and one RX 480 but with claymore ver 5.0 just Rx480 work !!
i give this error : (port is busy, use different -mport value)
and with claymore 4.0 both of R 390x and R480x works !!!
what i must do




You just use a different port. For example -mport 2345
The error is saying the remote monitoring port (for the sweeeeet ethman) is already used. On second instance, disable with -mport 0, or change port it uses (default is 3333), if using ethman, update port for 2nd instance.
It is explained by Claymore also.
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