A Reddit user tried their luck with a $20 4TB external HDD, and, to no surprise, they received a microSD card strapped inside a card reader and hot-glued to the back of the plastic case of an "external hard drive."
Maker Will Whang designed the MK4001MTD USB Bridge to facilitate the use of the worldβs smallest (0.85-inch) mechanical hard drives, originally released by Toshiba in 2004.