@markb1 

The modem is only able to provide internet connection to one device so in order to give internet to multiple devices you want to connect a router to the modem. The TL-SG1005D is only a network switch, and not a router so it is not capable of sharing the one internet connection to multiple devices.

So your setup should end up like this:

modem --- router --- PC1

                           \--- PC2

A typical wireless router usually has about 4 LAN ports so you can wire your two computers to it. If you need more LAN ports you can wire your switch to the router:

modem --- router --- PC1

                     |  |   \--- PC2

                     |  \----PC3

                      \----- Switch --- PC4

                                       \---- PC5

A router would be something like the Archer A7.

@Tony Thanks, Tony.

Mark

@Tony One more question, Tony.  The Comcast representative suggested I get a splitter.  Based on what you wrote to me, that would not work.  Am I correct?

Thanks,

Mark

@markb1 

Definitely not, all you need is a simple wireless router. Since you are mainly going to have a wired network you would not need a router with all the bells and whistles. Just make sure it has gigabit ports which most affordable routers have now.

@Tony

Thanks, Tony.

Mark