Instead of show inventory I would suggest that you check the output of show version or the output of show diag. I believe that either of these is a better way to verify what hardware is recognized and functional.
Also I believe that your error is in attempting to put an IP address on the FastEthernet1/2 interface. As the error indicates the switch is treating this as a layer 2 only interface. And in contrast to most layer 3 switches which support the no switchport command to enable layer 3 processing on the interface, this kind of Etherswitch does not support it. What it does support are SVIs (interface vlan n). So put the FastEthernet1/2 interface into a different VLAN, configure the VLAN interface for that VLAN, and configure the IP address on that VLAN interface.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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