3 ms·These are great for booting from USB drives on systems that are too old to support that natively.by sidpatil 4y agoThese are great for booting from USB drives on systems that are too old to support that natively.navaati 4y agoSo where do you boot it from in the first place ? Floppy ?elagost 4y agoEither that or CD. I used this to install an OS from USB on a PC from 1998 that has a USB port but can't boot from it.