1. Computer company spent much money on development of ac adapter every year. Beacuse stable and clean power is necessary for high performance and long life.
2. Every chip in computer need stable power environment.
3. Low quality ac adapter may cause jitter when CD-ROM or Hard Disk is working.
4. Low quality ac adapter will bring a very poor experience when you are enjoying music.
5. Low quality ac adapter will damage LCD/LED monitor.
6. Low quality ac adapter will affect CPU performance.
7. If computer suddenly crashed, it may be caused by the low quality ac adapter.
8. Low quality ac adapter can't protect your laptop when thundering or switching the lights.
9. Low quality ac adapter will hurt both laptop and laptop battery.

The difference between original adapter and replacement/ copy( Low quality ac adapter)