Sorry.
Linux is the name of the kernel that is usually used to run the GNU system, so the operating system that you're describing should be called GNU/Linux, but many people (yourself included, and many experts) call it Linux anyway.
It's free software, so anyone can package the different parts of it in different combinations as they like, so there are different distributions of GNU/Linux. By this I mean that some may include web browsers and email readers, while other simples distributions ('distros') may just give you the bare system.
Examples of distro names are Ubuntu, Fedora Core, Debian, etc.
If you're running a fairly recent version of any of these, then it should have USB support. Technically this depends largely on what Linux kernel you're running, but that's a technicality.
Have you tried just plugging it into a spare USB port on your computer?