Different Types of Cables and Connectors in Computer Networks

Summary: Depending on the types of cables and connectors used, a computer network allows smooth data, power, and signal transmission. From HDMI, USB, and DisplayPort multimedia-based connectors to Ethernet, coaxial, and fiber-optic networking cables, each has specific requirements. The connector enables compatibility and reliability. Choosing the appropriate one and getting it installed by a professional will give your network better performance, scalability, and business efficiency.

Table of Contents

Types of Cables and Connectors

The information flows through invisible highways. Such highways are not cloud services or applications. Instead, they comprise the physical cables and connectors that discreetly keep everything moving. Whether it is a high-definition video call with a client, an enormous dataset being shifted between two servers, or simply putting a print job into motion, all these operations require a sturdy cable system.

Given that they often speak of servers, routers, and switches when describing their network. Businesses tend to forget that they need the cables and connectors to physically link the systems. Choosing the different types of computer cables is not a matter of convenience.

What Is a Computer Cable?

Physically, a computer cable is a conduit that carries: 

  • power
  • signals
  • data from one electronic device to another


It comprises conducting materials, usually copper or fiber, wrapped in one or more insulating layers. It helps to avoid interference and guarantee reliable transmission.

Types of Computer Cables

Types-of-Computer-Cables

The variety of computer cables is attributed to the variety of tasks that modern computer systems perform. These cables handle different situations: 

  • some transmit high-definition video signals
  • others transfer massive data streams
  • some just provide low-level voltage, data lines
  • other such services to peripherals

1. HDMI

HDMI cables basically gave a new life to multimedia consumption and sharing. The older standards had two separate lines for audio and video, while HDMI gives a single efficient channel for both.

  • Main Purpose: Connecting displays, TVs, monitors, gaming consoles, or projectors.
  • The Great: It sends uncompressed high-definition video and audio.
  • Performance: They could all have a resolution from HD to 4K, and even higher, while the audio can be multi-channel.


HDMI is relevant in business for use in places other than conference rooms, training centers, and collaborative spaces. It is used where crystal-clear visuals must be displayed alongside synchronized audio.

2. USB-Connectors

While HDMI stands for multimedia, USB stands for everything else. Since its inception in the late 1990s, the USB has experienced a revolution from an early spec into the most versatile cable standard.

Uses: For connecting printers, external drives, scanners, smartphones, and peripherals.

Versions:

  • USB 2.0: Still standard; supports 480 Mbps.
    • USB 3.0 & 3.1: Speeds up to 5–10 Gbps.
    • USB-C: Reversible design, higher speeds, and robust power delivery.


For IT managers, USB-C is a very valuable option. It charges your laptop and transfers your data while linking to display—all through one line. So it cuts out the clutter and adds the flexibility.

3. DisplayPort

DisplayPort cables are designed for high-performance computing. It is not merely an alternative to HDMI. They are more scalable and professional-grade than they often are.

Applications: Graphic designing, video editing, CAD modeling, and gaming.

Strengths:

  • Deep color depths.
  • High refresh rates – above 120Hz.
  • Ability to daisy-chain multiple monitors.


In environments that lean on workstations for creative work or require multiple monitors, DisplayPort stands to be the standard that will guarantee their professionals get the performance their applications demand.

4. VGA (Video Graphics Array)

VGA is the grandfather of display connectivity. Introduced in the 1980s, it carried analog signals. It became the foundation for communications from a PC to a monitor.

  • Resolution Limitations: Generally up to 1080p.
  • Current Role: Legacy systems, older projectors, or equipment where upgrades are unfeasible.


While VGA has largely been replaced. It remains relevant in certain industries where
legacy infrastructure is still operational.

Types of Internet Cables for Computer Networks

Different Types of Cord Ends

When a computer communicates with external devices, a host of cables comes into the picture.

1. Ethernet Cables

Ethernet cables are the backbone for working within a LAN and use twisted pairs of copper wires to minimize interference while also conforming to the appropriate Ethernet standards. 

Cable Type

Max Speed

Distance

Common Usage

Cat5e

1 Gbps

100m

Small offices, residential

Cat6

1–10 Gbps

55m–100m

Mid-sized offices

Cat6a

10 Gbps

100m

High-density offices

Cat7

10 Gbps

100m

Industrial floors, EMI-prone sites

Cat8

25–40 Gbps

30m

Data centers

Cat6a is best from the perspective of buildings, combining the cost factor with scalability for present-day workloads and for some growth.

2. Coaxial Cables

With their thick shielding and central conductor, coaxial cables once reigned supreme in networking.

  • Strengths: Capable of resisting EMI; supports long-distance communication.
  • Connectors Used: Mainly BNC.
  • Current Use: CCTV installations, broadband internet, and special industrial applications.


They have become less common in LANs, whereas the coaxial remains truly paramount for video surveillance and RF-dependent settings.

3. Fiber Optic Cables

If speed and distance are paramount considerations, nothing can compete with fiber optics. As opposed to electricity, they provide unmatched performance using light.

Type

Core Size

Transmission

Typical Usage

Single-Mode (SMF)

8–10 µm

Laser-based, long-haul

Telecom, inter-building

Multi-Mode (MMF)

50–62.5 µm

LED-based, short-haul

Data centers, LANs

Fiber is indispensable for:

  • Data centers require multi-terabit backbones.
  • Enterprises scaling cloud applications.
  • Campuses interconnecting multiple buildings.


Yes, fiber requires a higher upfront investment, but its scalability and resistance to interference make it the gold standard for enterprises that simply cannot afford downtime.

Types of Connectors in Computer Networks

Cables are only as good as the connectors on the ends. Precision terminations minimize data loss, avoid downtime, and meet industry standards.

1. RJ45 Connector

  • Use: The standard for Ethernet cables.
  • Structure: 8 pins.
  • Deployment: Switches, routers, patch panels, workstations.

RJ45 connectors are the most widely used type in networking and still form the basis of wired connectivity within office environments.

2. BNC Connector

  • Cable type: Coaxial.
  • Mechanism: Bayonet-style lock for quick installation.
  • Usage: CCTV, RF systems, older broadband networks.

A little behind the new generation of enterprise LANs, BNC connectors are the backbone of security infrastructures in places where coaxial cabling dominates.

3. SC, LC, and ST Fiber Connectors

Connector

Characteristics

Use Case

SC (Subscriber Connector)

Push-pull locking, square design

Data centers, telecom

LC (Lucent Connector)

Small form factor, precise alignment

High-density fiber networks

ST (Straight Tip)

Bayonet lock, robust

Industrial & military applications

Among these, LC connectors have become the default for modern fiber deployments due to their compact size and ability to pack more connections into limited spaces.

4. USB Connectors

When it comes to USB cables, it is all about the connector.

  • USB Type-A: Standard rectangular connectors.
  • USB Type-B: Square connectors for printers and scanners.
  • USB Type-C: Acts as a reversed connector for data, power, and video.


The USB connectors are now increasingly used for network infrastructure management consoles, IoT devices, and mobile integrations.

Why Cable and Connector Choices Matter for Businesses

Cable and connector choices cannot be a back-office consideration now; they lead to business results:

  • Performance: Speedier cables mean a lag-time decrease in transactions that comprise all data.
  • Scalability: A cable that is future-proof can make sure you never have to do another installation.
  • Compliance: Fire codes and safety standards require the use of proper plenum-rated cables.
  • Reliability: Connectors that professionals terminate are sources of downtime.
Network Infrastructure

Why Professional Installation Matters

Theoretical knowledge of cables is one thing. Correct installation is another. Even high-quality Cat6a or fiber optic lines can fail without:

  • Proper bend radius adherence.
  • Certified crimping and termination tools.
  • Structured cable management for airflow and accessibility.
  • Post-installation testing and certification.


This is where businesses benefit from working with seasoned partners. At
Network Drops, we’ve spent decades building networks across New Jersey and Pennsylvania that don’t just connect device. They enable growth, safeguard uptime, and prepare companies for the future.

Switch to Network Drops for Reliable Cabling Solutions

From HDMI and USB, which keep daily interactions smooth, to Ethernet and fiber optics, which form enterprise backbones, computer cables and connectors are the unsung infrastructure. A coaxial cable, a twisted-pair cable, and fiber-optic cables all have different areas of application, and the connectors at their ends guarantee good performance. Those businesses that approach cable selection strategically, rather than casually, enjoy greater performance, fewer disruptions, and an infrastructure ready for all the demands of tomorrow. And with expert guidance of Network Drops, what may start out as just functional cabling soon becomes a step toward a competitive future.

Frequently Asked Questions

In network media, the common connectors include:

  • RJ45
  • SC
  • LC for Ethernet
  • fiber-optic
  • coax cables

No. Because of their design and application, different types of cable connectors use different types of connectors.

The connector you need depends on the cable you use and the devices you want to connect.

Sometimes. Under favorable conditions, the connectors on old network cables can be reused. Only if they suit the new cable.

If you use the wrong connector with your network cable:

  • you could end up with intermittent connectivity
  • failure of data transmissions
  • damage to your device
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