NAS 1× 512 MB DDR3L (max 512 MB ) Do you want to store data in a more organized way? If so, you ought to consider this Synology DS120J data storage. The heart of this data storage is an HDD with a format of 2,5". A big advantage of a classic HDD is that it has great capacity for the cost. However, one must remember that this type of disc is prone to damage from vibration and impact. It's good for home or office use, where one won't need to move it around. The 2.5" format is made primarily for those who travel a lot and need more storage space. It is a smaller format, which does not require additional power. This model has 1 external disc slots. Synology DS120J Data Storage Key Features Synology data storage device will help your store your data safely Synology data storage type is HDD