The Dreamcast video game console was Sega’s attempt to attract gamers away from Nintendo by providing an online component. Those Dreamcasts with the chipset that could accommodate online access featured a broadband insertion slot on the back. You can make a broadband adapter that will join the console with a PC so that the Dreamcast can access online content. The procedure is straightforward and will not require any modification of either the Dreamcast or the PC.
Remove all of the cables from the back of the Dreamcast console. Turn the console around so that you can see the back. Remove the screws surrounding the panel on the back with the Phillips jeweler’s screwdriver. Pull the panel off and place it aside. Grip the modem inside the compartment and pull it straight out.
Shake the can of electrical cleaning spray for 10 seconds to mix the contents. Spray the connection slots on the back of the modem with a 2 second burst. Reinsert the modem into the slot compartment. Push the modem firmly in until resistance is felt.
Line up the tab on one end of the phone cord with the depression on the phone socket that is on the side of the modem facing you, Push the end of the cord into the socket until a click is heard.
Place the broadband analog phone adapter next to the Dreamcast. Line up the tab on the other end of the phone cord with the depression on the phone socket that is on one side of the adapter. Push the end of the cord into the socket until a click is heard.
Plug the power cable attached to the adapter’s power supply into the AC port on the adapter. Plug the AC cord attached to the power supply into an outlet for power.
Line up the tab on one end of the Ethernet cable with the depression on the Ethernet socket on the other side of the adapter. Push the end of the Ethernet cable into the socket until a click is heard. Repeat this procedure with the other end of the Ethernet cable and an Ethernet socket on the PC.
You will need to adjust settings of both the Dreamcast and the PC to enable them to access one another through your DIY broadband adapter.