Its a reversion to old technology. The Cat port can only run half duplex. The users on the hub will share a collision domain. It will work, its not too bad for slow low use devices. It takes a cross over cable or the hub might have an uplink port that will do the cross over. It might have a button that controls if the port is crossed over or not.
is necessary to prevent a loop problem in the case someone loops two ports on the hub.
Disabling Spanning Tree PortFast is not enough.
Regards,
Milan
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