Alternatively called the case, system unit, or base unit. The chassis is the housing that helps protect and organize all the components that make up a desktop computer. The picture is an empty computer chassis. Outlined below are some things to consider when choosing a case for your computer components.

Why do we need a computer case?

Most people overlook the computer case as only a box, but it does provide the below important features.

  • Why do we need a computer case?

  • Components found inside a chassis.

  • Components on the case.

  • Types of computer cases.

  • Case colors.

  • What are computer cases made from?

  • Related information.

  • Computer case (chassis) help and support.

  • Structure - The case is what holds everything together in a compact and organized fashion.

  • Protection - Without the case, each of the sensitive components in the computer would be vulnerable to dirt, foreign objects, kids, animals, and electrical interference (EMI / RFI).

  • Cooling - The case helps keep the air properly flowing over all components, which keeps everything cool and running properly.

  • Noise - Many computers and components have fans that generate noise. Having those components in a confined case reduces the overall noise.

  • Aesthetics - Although some may disagree, most people would rather look at the case instead of all the circuit boards, wires, and the computer components.

Components found inside a chassis

Below is a list of the different types of hardware components you would find inside your computer chassis.

  • Expansion card.
  • Heat sink and Fans.
  • Internal drives (e.g., hard drive, CD drive).
  • RAM (random access memory).
  • CCFL (cathode fluorescent lighting)
  • Motherboard.
  • PSU (power supply unit).
  • CPU (central processing unit).

Components on the case

A computer case may also have any or all of the following components as part of the case.

For a visual example of all above components, see: What does the inside of a computer look like?

  • Power button
  • Reset button
  • LED (light-emitting diode)
  • Built-in card reader

Types of computer cases

There are many different motherboard form factors used for computers today that help decide the type of case you need. If you’re building a computer, make sure you buy a case that is compatible with your motherboard.

  • Desktop
  • Full-sized tower
  • Slimline
  • Mini-sized tower and tower

Case colors

Cases are available in a wide array of colors. Below is a listing of popular colors and a brief description on each color if needed.

Black - Standard black case. Urban White - Offset white. Most desktop computers and computer hardware are this color. White - White or very light color case.

Also, there are computer and case manufacturers who make their products in blue, orange, pink, red, silver, and yellow. In addition to a wide range of available colors, there are also translucent cases with a semi-clear color look into the case.

What are computer cases made from?

The materials used to make or construct today’s computer chassis are primarily metal and plastics. However, custom cases can be made from other materials like wood. For example, the first Apple I computer used a wooden box.

1U, 2U, 3U, 4U, 5U, Bay, Bezel, Case, Case badge, Computer, Enclosure, Front panel, Hardware terms, Housing, System unit, Thumb screw

  • How to open a computer case.
  • Listing of computer case manufacturers.
  • Computer case (chassis) help and support.