Saturday 14 April 2018

common cables used in computer

Like nerves connects different parts of human body, In computer also, some cables are used to connect different parts. In Daily life you are watching different types of cable while using your personal PC or Laptops ext.. Most of the cables are looks similar in their physical appearance but they serve different service. As a computer user you should know which cable is used for which purpose. Here we are trying to provide details about common cables used in computer.

VGA ( Video Graphic Array)

The most common use of VGA is to connect you CPU to monitor, projector, or TV. GA connections can be identified by 15 pins arranged in 3 rows with 5 on each row. Each row corresponds to the 3 different color channels used in display: red, green, and blue.

DVI ( Digital Video Display)

The DVI connection became the successor to VGA as technology moved away from analog towards digital. Digital displays, like LCD, proved to be higher quality, which soon became the market standard for home pictures. DVI connectors come in 3 varieties.
  • DVI-A can transmit analog signals, allowing it to be backwards compatible with VGA (useful for CRT monitors and LCDs of lower quality).
  • DVI-D can transmit the newer digital signals.
  • DVI-I is capable of both analog and digital.
  • In certain cases, you may need a VGA-to-DVI or DVI-to-VGA converter cable.

HDMI ( High Definition Multimedia Interface)

In the past decade, high-definition broadcasts became the new standard of what it means to be high quality. Unlike VGA and DVI, HDMI sends both video and audio signals together. The signals are digital only; thus, HDMI is only compatible with newer devices.

USB ( Universal Serial Bus)

The USB connection is quite possibly the most pervasive connection type in today’s world. Nearly every form of computer peripheral device — keyboards, mice, headsets, flash drives, wireless adapters, etc. — can be connected to your computer through a USB port. The design has evolved over the years, which means there are multiple versions of USB available:

IDE ( Integrated Drive Electronics)

IDE cables were used to connect storage devices to a motherboard. If you’ve ever opened up a an old hard drive then you likely know what an IDE connector looks like. It’s the wide cable that looks like a ribbon with more than 2 plugs.
The connectors on an IDE cable have 40 pins; the smaller 2.5” drive variety uses a form-factor version of the IDE that has 44 pins.

SATA ( Serial Advanced Technology Attachment)

Newer hard drives will likely use SATA ports over IDE ports. In fact, SATA was designed to succeed IDE, and it has. Compared to IDE, SATA provides higher data transfer speeds. Your motherboard needs to be compatible with SATA, and nowadays most of them are.

A standard SATA cable can be identified by two connectors, each having 7 pins and an empty notch. It looks like a subtle L-shape.


Ethernet cables are used to set up local area networks. In most cases, they’re used to connect routers to modems and computers. If you’ve ever tried to install or fix a home router, you’ve likely dealt with an Ethernet computer cable. Nowadays, they come in three varieties:

  • Cat 5 cables are the most basic type and provide speeds of either 10 Mbps or 100 Mbps.
  • Cat 5e, which means Cat 5 Enhanced, allows for faster data transmission than its predecessor. It caps at 1,000 Mbps.
  • Cat 6 is the latest and offers the best performance of the three. It’s capable of supporting 10 Gbps speeds.



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