2.5 inch ssd drive laptop discos duros ssd 128gb 256gb 512gb with factory price

1.Q: What is the difference between SSD and HDD?

   A: Both are storage devices. but SSD with better effectiveness , especially its random access speed significantly ahead of HD. But with higher price, so more suitable for operating system  installation on the practical application. The HDD with lower price and slower speed. usually been used as storage for data backup.

2.Q: When i restart my computer. I realized that the SSD storage become largger or smaller sometimes. is it any problem with the SSD?

   A: When the operating system boots, there will be job data be written in the flash disk, so there will be different  larger or smaller storge condition due to the differenent condition of the flash disk.  So you will find the remaining capacity be slightly larger or smaller, this is normal circumstances.