Hard disk drives are used to store computer programs and data. The most common types of hard drives are SATA and IDE which currently range from 80GB to 750GB.

Removable drives are floppy drives, zip disks. Zip drives are available in IDE and USB interfaces. DVD writers 4.7GB & 8.5GB are also available.

Ram is what the computer uses to operate. Memory module sizes range from 128MB to 4GB. 240-pin DDR2 memory is most commonly used in the Intel Core 2 Duo systems & AMD Athlons.

The CPU is the Central Processing Unit. This is the heart of all computer systems and is the primary factor in system performance.

Motherboards are the heart of the system. All components of the computer are attached to the motherboard.