I did power off and on multiple times after installing the Nic's and that didn't work.

You should be able to get away without reinstalling. Just power down and add the new NICs, but make sure they are connected.

There is no ifcfg-enp1s6 which I'm assuming is the reason I'm unable to get an IP address in order to work from the console. Maybe I'll just reinstall the OS with the NIC's installed and see if that corrects the issue.

You should not need to create the ifcfg files, ClearOS should so it for you (and they'd be ifcfg-enp1s6 etc). You should be able to see the configuration options on the console. Note when I installed a few months ago, if the NIC's were in the server but not connected the console hung which was a PITA to diagnose. It also meant I could not proceed to configure them. Easiest is to start with a single NIC in standalone mode and set to receive an IP by DHCP.

You can check for a driver issue by doing an "lspci -k | grep Eth -A 3" where you should see the Driver in use is r8169.

Thank you both for the quick replies!
My intention of only installing 1 NIC at a time was so that I could make sure that they work in this system since the package said Windows only.
The NIC's are Trendnet Gigabit PCI TEG-PCITXR

My initial configuration was a standalone behind my current router just to get things set up. I intend to connect directly to my modem.

I did not configure the NIC at all, I'm looking for documentation on how to do this now. If you could point me in the right direction I'd be grateful.

I noticed that there is not an ifcfg-eth0 file inside /etc/sysconfig/network-scripts. There is only the ifcfg-lo. Maybe I need to create those two files? ifcfg-eth0 & ifcfg-eth1?

Since it doesn't seem to be a driver issue I went ahead and installed the second NIC. I'm assuming I need to configure one of the NICS for DHCP from my ISP.

now when i type ifconfig -a i get
enp1s6: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether d8:eb:97:69:48:f6 txqueuelen 1000 (Ethernet)

enp1s7: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether d8:eb:97:69:49:75 txqueuelen 1000 (Ethernet)

next I brought up enp1s6 with the "ip link set enp1s6 up" command (that is the NIC connected to my router for the moment)

ifconfig -a
enp1s6: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet6 fe80::daeb:97ff:fe69:48f6 prefixlen 64 scopeid 0x20<link>
ether d8:eb:97:69:48:f6 txqueuelen 1000 (Ethernet)

So I'm now getting a link-local address. I'm still not sure how to go about configuring the interface and possibly assigning the interfaces to eth0 & eth1.

Thank you!

Nick is correct. It looks like your computer isn't recognizing the additional nic. A link light simply tells you if there is power coming to the NIC from the other host. NICs will send a signal and a voltage down the line which causes the other nic to illuminate on the link light. In some cases this link is power actually derived from the other box and as such till illuminate regardless of the power situation on the local machine. Some nics don't function that way but the design is only to demonstrate hardware links...not software compatibility or drive function.

If you have a link to a website that shows the model of your other NIC we might be able to give some pointers. But without knowing what kind it is, it make it kind of hard. Worst case scenario, take a picture of it (both sides) and post that here in this thread.

Hi and welcome to the forums.

The NIC driver should be fine but you only have one NIC. ClearOS is using the correct driver. I assume you've set up ClearOS as Standalone, no firewall? Have you set your NIC Role to external and Connection Type to DHCP?