All of the USB2.0 enclosures I've seen are backward compatible with USB1.1. No idea if this is actually part of the USB2.0 standard or just a feature.
The system requirements page for that drive lists "USB 1.0, USB 1.1, USB 2.0" so I'm assuming that mean it works

Be aware if you've got a fast drive then it won't be able to burn at full speed when using USB1.1.