cisco 3900 series router LAN ports

I just bough a couple of Cisco 3900 series routers and I see that it has 3 gig ports. But for gig0/1 and 0/2, I see that it is either copper or fiber. I have 2 SX transceivers plug into it. My question is I can use those 2 ports either copper or fiber. Correct? Can I use one with fiber and the other one for copper?
Also, is there a command to see the hardware connection to the ports. On the switch, I use sh int status and I can see the spec for the ports, either copper or fiber. But that command does not seem to work on the router. Thanks
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leblancAccountingAsked:
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Ken BooneNetwork ConsultantCommented:
So for those two ports you can use either/or but not both.  You need to issue the media-type command to specify which port you are using.  Just issue media-type ? and it will show you the syntax for the options.
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Ken BooneNetwork ConsultantCommented:
So in other words
config t
inter gig0/1
media-type ?

then you can see how to set the port to be rj45 or the transceiver port.
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