When you look at the front side and back side of the computer CPU, you can see 10 or more ports on the back side of the CPU and some ports and buttons on the front side. You can use external devices like a Pen drive, printer keyboard, mouse, etc. and you can see a power button and a reset button on the front side.
USE OF PORTS: -
You can use a USB port to connect external devices like a keyboard, mouse, printer, and Pen drive at the USB port, and some ports it is basically used for connecting a VGA cable for monitor display and a Sound port for audio.
USE OF BUTTONS: -
You can see two buttons power and reset on the front side of the computer CPU. The Power button is used to power the computer on and off and the reset button is used to reboot the computer.
FRONT OF A COMPUTER CASE: -
When you see the front of a computer case, you can see two buttons power and reset button and some USB ports such as a USB port and sound port on the front side and you can also see a DVD writer on the front.
BACK OF A COMPUTER CASE: -
When you look at the back side of the CPU case, you can see a power supply port and a fan and you can see a VGA port and sound port, and some USB port on the back side that allows you to connect external devices.