How to disassemble a system unit 🙃

The Computer System Unit

The system unit is the box-like case that contains the electronic
components of a computer. Many people erroneously refer to this as the
CPU.

                                                                           The Motherboard


The motherboard is sometimes called the system board or main board. It
is the main circuit board of a microcomputer.

                                                                          Hard Disk Drive


A hard disk drive is a high capacity, non-volatile, magnetic data
storage device with a volume (disk) that is usually non-removable.

                                                                           Power Supply Unit


The power supply unit (PSU) is used to convert AC currents from the
main supply to the different DC voltages required by various computer
components.
Power supplies are quoted as having a certain power output specified
in watts, A standard power supply would typically be able to deliver
around 350 watts.

                                                                        CD-ROM Drive


This is a high capacity optical data storage device with a removable
disk. It writes data onto or reads data from a storage medium.
A CD-ROM drive may be connected to the computer via an IDE (ATA),
SCSI, S-ATA, Firewire, or USB interface or a proprietary interface.

                                                      RAM (RANDOM ACCESS MEMORY)


Hardware device that allows information to be stored and retrieved on
a computer. RAM is usually associated with DRAM, which is a type of
memory module.