The USB (Universal Serial Bus) technology offers faster connection than other connections like the serial and parallel ports. Many of today’s computer peripherals make use of the faster USB port however. The PS/2 connector is used mainly for connecting devices such as keyboards and mice to PC compatible computer systems. Nowadays mouse devices like the Forward USB K/B with PS/2 Mouse make use of the USB and the PS/2 connections. Technically, the components of standard mouse device include a ball, 2 rollers, shaft, an infrared sensor and LED, and a processor chip.