Any current compatibility issues in laptop trade are reflective of the early era of personal computers, when there were different manufactures and each and every one of them have their own system and incompatibility was more than a norm. Some mostly internal or proprietary made by laptop producer are not interchangable with other manufacturer's component, so that the same poduct are used with the laptop they produced. This is a major disadvantage of laptop as against the laptop. The surpreme advatahe of a laptop has been granted as its portability but this compatibility issues is a great challenge for the techinicians of present day.
Some of the products are intentionally made incompatible to ensure product stability, prolong product lifetime, to avoid dubious warranty issues and to protect computer beginners from harming their machines. A significant pint to note is that the vast majority of laptops in the market are manufactured by a small handful of original design manufacturer. The OEM or original equipment manufacturer, in fact, matters more than ODM. Major relationship between these two include:
Quanta sells to HP/Compaq, Dell, Toshiba, Sony, Fujitsu, Acer, NEC, Gateway and IBM
Uniwill/ECS sells to IBM, Fujitsu, and Dell
Wistron sells to HP/Compaq, Dell, IBM, NEC, and Acer
Arima sells to HP/Compaq, NEC, and Dell
Asus sells to Apple, Sony, and Samsung
Compal sells to Toshiba, HP/Compaq, Acer, and Dell
Quanta is currently the largest manufacturer of notebook computers in the world
Inventec sells to HP/Compaq, Toshiba, and BenQ
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To compromise the compatibility issues some manufacturer have had products lines where they have refrained from including some internal hardware in their products by adding in the number of standard hardware outlets and ports. In terms of hardware compatibility issues, PCMCIA and CardBus has proved to be a rather enduring standard.
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