A friend asked me to connect an external USB drive to his computer, I found it strange because there are usually no problems with USB drives under modern versions of Windows OS or LINUX. He bought the drive somewhere on the Internet and couldn't even tell if it was on Aliexpress or TEMU, but it doesn't really matter.
The first thing that surprised me was the low weight, but I thought it was some version of an SSD drive, or some version of high-capacity memory with HDD emulation, and I didn't even notice at first that the declared capacity was huge. When I connected it to the computer, it detected it and declared a capacity of 24TB. I was amazed! Wow, a 24TB SSD drive, that's awesome! I started the formatting function, which took a while, but for such a large drive ~20TB, it's natural, right? I didn't even run any diagnostic tests and just tried copying a larger files to the drive. Everything started fine, but after a while, "voilà", the drive disconnected and reported itself as an unknown USB device. I pulled the drive's USB connector out of the computer and after a few seconds plugged it back in. The drive connected again nicely and reported itself as 24TB. I already suspected that it was some kind of fake. It was time for a screwdriver and other tools. I opened the disk case.
At first glance, it was obvious what a miracle it was! The 2.5" case contained a printed circuit board for a USB/UBC-C/SD-card adapter. An SD card was inserted into the SD card slot, sd card was without any description. Everything was precisely sealed with "high-quality" hot melt adhesive, probably using a "Glue Gun". I took out the SD card and inserted it into the adapter in the computer and the 24TB disk became a 7.5GB SD card.
I formatted the SD card and tested it. How lucky it was good, even though the capacity 7.5GB is non-standard, capacity is usually 2GB, 4GB, 8GB, 16GB...
BE CAREFUL WHEN BUYING EXTREME CAPACITY DISKS AT A LOW PRICE!! So that you don't become a victim of scammers.