We believe these should be based on either PMR or SMR technology.
However, what the company did confirm is that the new My Passport 4 TB HDDs are based on 2.5”/12.5 mm hard drives featuring four 1 TB platters. Western Digital traditionally does not disclose a lot of technical specifications of its external HDDs, such as spindle speeds or cache sizes.
While the update looks fairly regular, it is important what is inside these new 4 TB drives. As for visual aesthetics, the design of the new 4 TB My Passport drives remained the same as that of the latest generation. The drives also have hardware AES-256 encryption. Like the other Western Digital’s My Passport HDDs, the new models feature a USB 3.0 interface and come with automatic WD Backup software. The new drives are based on the WD’s new 2.5”/12.5 mm HDD platform which uses high-capacity platters. The new portable external HDDs can store up to 4 TB of data, an improvement over previous-gen portable storage solutions from the company. Western Digital last week introduced several new members to its My Passport family of external hard drives.
