External hard disk
It allowed you to easily attach hard disk which could save many data including video and photograph to PC and Mobile terminal with external hard disk. It is most suitable for data preservation and backup.
We assume storage medium and are new generation storage using flash memory.
We adopt Interface standards such as USB or SATA like HDD and attract attention as storage device as a substitute for HDD.
Internal hard disk
For speedup of system start and data backup.
As for the PS4 exchange use.
HD leader writer
It is HDD case which pulls HDD for incorporation casually without using exclusive case, and finishes pushing itself forward.
We save a large quantity of data including photograph and video data to plural HDDs and are recommended item in which wants to make good use of HDD which has remained after to use while changing and incorporation HDD exchange.