@TWillus 

It sounds like you're experiencing a connectivity issue with your TL-SG108 switch. To ensure both your computer and Wi-Fi router can connect to the Internet through the switch, please follow these steps:

1. Check Connections: Ensure that the Ethernet cables are securely connected to both your computer and the TL-SG108 switch. Also, verify that the switch is properly connected to the Fiber Internet Router.
2. Port Configuration: Make sure your Wi-Fi router is connected to one of the switch's ports and the Fiber Internet Router is connected to another port on the same switch.
3. IP Address Conflicts: Ensure that there are no IP address conflicts. The devices connected to the switch should be set to obtain IP addresses automatically (via DHCP) unless you have assigned static IPs within the correct range.
4. Network Settings: Verify that your computer’s network settings are configured correctly. It should be set to obtain an IP address and DNS server address automatically.
5. Switch Reboot: Sometimes a simple reboot of the switch can resolve connectivity issues. Disconnect the power, wait for a few seconds, and then reconnect it.
6. Check for Firmware Updates: Although you haven't mentioned the firmware version, check if there are any firmware updates available for the switch and apply them if needed.