Different blocks of hardware components build ups a computer. Hardware is the integral part of any computer. It includes motherboard, CD, DVD hard drives, chipset, central processing unit, RAM (Random Access Memory) and a complete case called peripherals. This hardware component excludes monitor or display, keyboard and the mouse. If you are looking to buy any hardware device, you can check the below websites. Even you can order them online. Many websites provide an option called cash on delivery.