Router 4331 in PT has 3 GigaEthernet ports but only 2 shown in the interface while cabling

[cyberpen]

I'm using Windows 10 and Packet Tracer (PT) version 8.0 in 64 bit. The router 4331 in PT shown that it has 3 gigaethernet ports. The csreen capture is as follows.

However, there are only 2 gigoethernet ports can be used while cabling and the screen capture is as follows.

What can I do so that I can use the third gigaethernet port while cabling router 4331? I really need a expert

[Martin L]

you may have found a bug in PT; nothing we can do besides telling PT about the issue. Use Report problem/issue link from PT Help menu.

thanks

Regards, ML
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[Secretcodrin]

It's been 2 years already and the bug still persists in PT 8.2.1.0118

[iles]

You need to add an SFP module for the third connection. Click on the ISR4331, go to the physical tab, power down the device, select GLT-T or GLT-TE and drop it into the SFP ports on the left side next to the original 2 gigabit ethernet ports.