A system unit with a MIDI port can also record sounds created by a synthesizer and then process these sounds. This port connects the system unit to a musical instrument like an electronic keyboard. MIDI stands for Musical Instrument Digital Interface. Furthermore, it can connect up to 63 devices together. It can connect devices such as digital video cameras, digital VCR, color printers, and scanners that require faster data transmission. Some special-purpose ports are as follows: It contains multiple USB ports used to connect many USB devices. USB hub plugs into the USB port on the system unit. It means that the first device is attached to the USB port of the computer, the second USB device connects to the first USB device, the third USB device connects to the second USB device, and so on.Īn alternate to the daisy chain is the USB hub also. Multiple devices can be attached to the USB port through the daisy chain. Many computers have one or two USB ports. Universal serial bus port (USB) can connect up to 127 different peripheral devices with a single connector type. Serial port pin informationīelow is a listing of each of the pins on the DB9 connector, their purpose, and signal name.VideoShow APK Universal Serial Bus Port (USB) However, was frequently used with older printers and plotters. Printer - Today, this not a commonly used device for serial ports. Network - One of the original uses of the serial port, which allowed two computers to connect together and allow large files to be transferred between the two.

Used commonly with older computers, however, is also commonly used for its ease of use. Modem - Another commonly used device for serial ports. Mouse - One of the most commonly used devices for serial ports, usually used with computers with no PS/2 or USB ports and specialty mice. What is the serial port used for?īelow is a listing of various hardware components that can be purchased and used with your serial port. The connection is in the shape of the letter D, is a male connector, and has 9 pins. In the above graphic of a serial port, you can notice the DB9 serial port connection is easy to identify. Also, many new computers and laptops no longer have a serial port. With the introduction of USB, FireWire, and other faster solutions serial ports are rarely used compared to how often they've been used in the past.

Serial connector types