The first company to sell a USB flash drive was Trek 2000 International. The device was marketed as a "thumb drive," was first available in Singapore, and was able to store 8 MB. The International Business Machines Corporation (IBM) was the first company to provide the easily transportable drive in the United States, and it went on the market in 2000.
The IBM version of the flash drive was originally called DiskOnKey. By 2013, just 3 years later, the USB 2.0 was introduced and provided more storage space and faster speeds. As of 2015, flash drives were on the market that could hold up to 128 GB.