Understanding USB - USB stands for Universal Serial Bus. USB is a technology that allows us to connect external devices (peripherals) such as scanners, printers, mouse, keyboards (keyboards), tool storage (zip drive), flash disk, digital camera or other device to the computer. USB supports data transfer at 12 Mbps (million bits per second). Computer (PC) today, generally have a USB port. Usually provided at least two ports. When compared with a parallel port and a serial port, USB port usage easier in use.
If opened, the USB cable will be seen there four colors, namely red, brown, yellow and blue. Red and brown cable doubles as a power / to an electric current. Yellow and blue wires serve to carry / transfer data.
Here are some of the perks that have USB:
- Computers can be positioned into a host
- More than 127 devices can be connected to a computer directly or using a USB hub
- USB cables are used directly to reach 5 meters. Meanwhile, if using a hub device can reach 30 meters.
- USB devices are 'hot swappable' means hardware that is already using the USB port is plug and play