QNAP Expansion Unit TR-004, 1x USB-C 3.0

For folks who need more storage from a QNAP NAS, a backup appliance for that NAS, or those who simply do not want a NAS and want RAID 10 external storage, this seems to work reasonably well so long as you do not update the firmware. We would avoid firmware updates unless absolutely necessary given our experience, and that feels strange to type. USB Type-A/ Type-C are not the most secure connectors, but for a lot of folks, they are at least easy. This is the type of enclosure we can see many folks who want to do backups of files and then store them offline. It is also an easy way to move a lot of data from a desktop or laptop to a NAS. At $219 for the enclosure, this is going to be our recommendation over the TR-002 in most cases. It is larger to accommodate two extra drives, but the extra capacity is useful. The TR-002 is $80-90 to connect each of the two drives it holds. This TR-004 is an incremental for $40-60 depending on the day making it $55 to connect each drive. While you are paying more for QNAP’s brand than some of the cheaper options, this is a relatively well-thought-out enclosure that matches QNAP’s other 4-bay units.