Hi Greg, based off your description... you don't need to do anything. By default the SX300 switch is layer 2, the IP address is for management only and there are no additional vlans. Quite frankly, you can plug the switch in the router and traffic will pass unless you have a bad wire or switch port OR the upstream device has a problem.
If for whatever reason traffic isn't passing between the router and the switch and there is zero config on the switch, you may want to check that router.
-Tom Please mark answered for helpful posts
Please mark answered for helpful posts