SyQuest removable 44MB hard drive connected to Atari TT030 using SCSI
It is fascinating that the drive works flawlessly even with a lot of dust inside (unlike with normal hard drives, the reading head is not in a clean air environment here). This particular drive was used to transfer large files between computers in a DTP company. It is fast and reliable. On the other side its price/capacity ratio was not good in comparison with normal hard drives so it was not widely used.