Practicality
LS-120 and LS-240 USB models were quite popular for debugging and installing servers that did not have a CD drive available. They could both store massive amounts of drivers for installation purposes as well as be used to run live operating systems, such as ReactOS, which amounts to 150 MB. Even today, this is widely used on discontinued servers without CD/DVD drives and external HD or flash support and that can only otherwise boot from A:, B:, if the hard drive is not operational.
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