Posted 16 September 2004 - 02:38 PM
Just like other hardware, there are many factors invovled in the lifespan. Even the differences between internal and external one, can vary. The best thing that I can tell you, is that most parts fail because of heat issues. If there is not enough circulation or dust starts piling up on the components, then it can create hotspots. This is why it is recommended that you clean out computers once a month, with a car of compressed air. While the case is open, you can even go as far as taking several pictures, at different angles. Compare then from month to month and you may start seeing very vague color changes. This would also be an example of something possibly going wrong. Granted, this is a little extreme, but I know some people that do it. Even the immediate enviroment could make an impact: smoking, pet hair, ants, ect...
I know that it did not really answer your question. If I was going to put a year range on modems, it would be: internal 5-7 years, external 4-6 years. If your modem lasts more then 5 years, you should be happy. When you go to replace it, an updated model would be available, and in theory, will be faster and better.
We are all curious like a cat. We wonder, we ask, we learn.
Please post back when a suggestion works, so that others may learn.