11 Types of Computer Ports and Their Uses in the Workplace

By Indeed Editorial Team

Published May 28, 2022

The Indeed Editorial Team comprises a diverse and talented team of writers, researchers and subject matter experts equipped with Indeed's data and insights to deliver useful tips to help guide your career journey.

The hardware that working professionals routinely use changes regularly. For instance, individuals no longer use floppy disks to store data, as there are more efficient media with larger storage capacities available. Learning about various modern computer ports can help you stay informed in your workplace environment and remain productive when asked to use various electronic devices, cords, and ports. In this article, we discuss types of computer ports, compare serial and parallel ports, highlight their importance in the workplace, and provide a list of common computer ports and their uses.

What are the types of computer ports?

There are different types of computer ports that you can easily notice on an average computer. A computer port connects electronic equipment, such as a laptop computer, to another peripheral device or computer. This connection can allow you to use a variety of features, including data, power, audio, and video transmission. Connecting a printer to a computer, charging a phone, or storing data on a Universal Serial Bus (USB) drive are all examples of how computer ports can be useful.

Some individuals refer to a computer port as a communication port as it facilitates communication between the computer and its peripheral devices. You can refer to the receptacle end of the connection as a port, and it's typically on the motherboard.

Serial vs. parallel ports

For computers, you may classify communication ports into one of these two categories, depending on the sort of communication or protocol they use. A serial port is an interface that allows peripherals to communicate with one another using a serial protocol that transmits data one bit at a time over a single communication line.

Conversely, a parallel port is an interface that enables parallel communication between a computer and a peripheral device. This means that it allows data to travel in and out of the computer through several communication lines or wires. The printer port is an example of a parallel port.

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Why are computer ports important in the workplace?

Computer ports are critical in the modern workplace, as computers and other electronic devices are common in the majority of work settings. Understanding how to recognize various ports, how to operate them, and how to use them may aid you in increasing your workplace productivity and assisting others in doing the same. You can use ports to connect to power, charge peripheral equipment, establish Ethernet connections, save documents or projects externally, project audio or visual material, and connect to peripheral devices such as printers or scanners through a cable connection.

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11 types of computer ports and their uses

Computer ports vary not only in their shape but also in their functionality. Here's a list of many common computer ports and their uses:


HDMI is an acronym for High Definition Multimedia Interface. It's the most commonly used signal for transmitting both audio and video in high definition via a single cable. It's beneficial in both the business audio-visual (AV) and residential AV sectors and is the most popular cable for connecting devices in homes.

HDMI ports accept HDMI cables for transmission and reception of high-definition audio and video signals. You can often find HDMI ports on computers, TVs, and other multimedia devices. They enable the projection of pictures and sound onto another device. For example, to display a video from your laptop onto your television, you may link the two devices using an HDMI connection.

2. RCA

While RCA connections have many of the same characteristics as HDMI cables, they carry audio and video information independently. These ports and cables are often colour-coded to identify the proper port for the insertion of audio and video cables. Numerous gaming systems from the 1990s and early 2000s, and multimedia devices such as DVD players, project audio and visual information to a television or projector through RCA cords.

3. USB-A

You can find a USB-A port on a variety of devices, including laptops, game consoles, televisions, and mobile phones. It's useful for transmitting and receiving data and power. You can use this kind of connector to charge a device's battery and send data at a relatively rapid rate. For example, when you link your phone to a car's USB drive, you may utilize both functions. You may charge your phone while concurrently playing saved or streaming music using a USB cable. This port is rectangular in shape.

4. USB-B

USB Type B connections, which you can also refer to as Standard-B connectors, are square in shape with a small rounded top or a large square protrusion, depending on the USB version. A USB-B port is comparable to a USB-A port in terms of capability, although it's mostly used for printers and scanners. You can sometimes find USB Type B ports on external storage devices such as optical disks, floppy drives, and hard drive enclosures. The cables that enter this port transmit data at a rate comparable to USB-A, roughly 480 Mbps.

5. USB-C

USB-C provides several advantages. It's reversible, which means it won't be necessary for you to turn the connection to find the proper position. It's a single USB connection form that all devices can use, which eliminates the necessity of storing a variety of USB cables with varying connector shapes for your various devices. Additionally, USB Type-C ports enable a range of various protocols through alternative modes, allowing adapters to output HDMI, VGA (Video Graphics Array), DisplayPort, or other forms of connections from a single USB port.

The USB-C connector is oval and much smaller than the USB-A or USB-B connectors. It provides a new widely acknowledged industry standard for transferring data and electricity via a single wire. The port is neither oriented vertically nor horizontally, and the cable has the same connection on both ends, which adds to its simplicity of use. While the transfer rate is far faster than the other kinds of USB connections, at roughly five to ten gigabits per second, it's not as widely used as the other types of USB ports.

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6. USB 3.0

A USB 3.0 port is the successor to the USB-A port. It's identical in shape, which enables it to be connected to any kind of cable, and the connector offers comparable transfer rates to a USB-C port. Numerous new USB products on the market now have a USB 3.0 connector.

7. 3.5mm audio

This port is useful exclusively for audio transmission and you can find it on a large number of media players, mobile devices, laptops, and automobiles. A 3.5mm audio jack is typically on any device that plays audio or allows for the connecting of headphones. Cords that plug into these ports may connect directly to a device or may have an additional 3.5mm audio connector on the other end, enabling connecting to a variety of devices.

8. Ethernet

Ethernet ports are for transmitting wired internet connections. Such ports allow connections from Ethernet cables, which also connect to wireless routers or modems to allow for internet capabilities. Ethernet cables may enable faster internet connections than wireless connections, but many modern Wi-Fi connections have been able to achieve similar speeds to wired connections.

9. Memory card reader

A memory card reader is a device that allows you to access the data stored on a memory card, such as a CompactFlash (CF), secure digital (SD), or multimedia card (MMC). Most card readers also have a write capability, and when used with the card, may serve as a pen drive. Certain printers and smartphones, along with most personal computers and tablet computers, have a built-in card reader. A memory card reader is used to accept and send data, which is often as images or videos.

10. MicroSD reader

MicroSD card readers are comparable to SD card readers, although they're smaller and often have slower transmission rates. Numerous digital cameras and other tiny electronic devices that save data but cannot accommodate a full-size SD card reader use this connector. MicroSD cards can now store significant quantities of data in less than a square inch of surface area due to improvements in the memory storage industry.

11. DisplayPort

A DisplayPort allows for the transmission of audio and video in 4K resolution, which is the current standard for high-quality audio and video. It's an alternative to HDMI that supports a higher resolution but is more common for PC use than TV use. Its higher bandwidth is an advantage if you want to connect multiple monitors to your computer. There's also a mini version of this port that's sometimes placed on TVs, laptops and desktops.

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