The cable that you would need is a standard ethernet cable, which has the RJ-45 8 pin connectors. These are available at Walmart, Best Buy, Lowe's, Home Depot, Staples, and just about anywhere computer supplies are sold. Your new computer must also have the ethernet jack. If it doesn't have the RJ-45 connection, you either need to get a wireless router, if your new computer has wireless capability, or a cable that connects to the USB port of your computer. Best place to find that would be Best Buy or Staples.