I have an older white ethernet cable that doesn't fit into the pi's ethernet port for some odd reason. It's a CAT5 but would that prevent it from inserting properly? The blue ethernet fits and it's a CAT5e. Thanks for any help
It's a standard. The cable terminations should be dimensionally identical within a fraction of a millimeter. Make sure the port on the RPi is not damaged, obstructed, and that the cables are oriented correctly.