I have acquired an old Dell 316SX PC with an old style ethernet card. It has both a coax connector and a DB connector. What adapter can I use to plug it into a modern switch? You can't use a ...

Later standards used thinner coax that attached to the card using a Tee connector ... If you are interested in learning more about old style Ethernet, [MattMillman] did a 10Base5 project ...

Sure, you can buy Ethernet cables from the store, but where's the fun in that? If you want to make custom cable lengths or crossover cables, or repair a broken connector, why not do it yourself?