Question

which connects 3 to 12 PCs ,storage devices ,printers etc..​

Answer 1

Answer: In order to physically connect three or more computers, you should use crossover Ethernet cable. You must be able to plug the Ethernet cables into a device that will allow signals to be transmitted to one another. There are several devices that will allow you to do this: a hub, a switch, or a router.

Explanation:

Answer 2

Question:

which connects 3 to 12 PCs ,storage devices ,printers etc..

Answer:

In order to physically connect three or more computers, you should use crossover Ethernet cable. You must be able to plug the Ethernet cables into a device that will allow signals to be transmitted to one another. There are several devices that will allow you to do this: a hub, a switch, or a router.