We had a look with Seagate’s NAS HDD earlier. This time we’re taking a look at its Desktop HDD counterpart 4TB ST4000DM000 drive. Desktop HDDs are available in capacities up to 5TB. Seagate Desktop HDD 4TB uses an odd spindle spin speed of 5,900 RPM with 4x 1TB platters inside. The 5TB counterpart uses 1.25TB per disk.In the drive’s specification chart, its under “Desktop HDD.15″ drive.