Cables are an essential in any part of computing, with a variety of cables needed for specific jobs. HDMI and AV cables for example, allow you to transfer data shown from one screen to another. Once you have all of your computer components and accessories, they are useless without the correct cables to connect everything together. There are varying levels of quality so if you are aiming for high definition then go for a higher range of cable to deliver those important signals. For most standard cables suffice.