He should probably check the reviews of the mp3 player and the seller accuracy.
Answer:
Hard drive
Explanation:
The hard drive is where the operating system, programs and data reside on (unless the data is saved and backed up elsewhere). An older hard drive that uses platters for reading and writing data to it will be slower than a later model solid state device. Newer hard drives have very fast access speeds compared to older units.
Could you give the answers it gives you? It should be along the lines of purposeful destruction of equipment.