An update on my situation:
I have already installed Toast, and the QPS USB Toast extension is the only driver in the extensions folder. The Apple System Profiler recognizes the drive correctly, however, Toast says that the drive is a "M_twu_i7 CW- 78 (Not Supported)" at USB #0. The Apple System Profiler says that the drive is at USB port #1. It seems that Toast cannot recognize the drive. Here's another thing: when I put a normal CD-ROM into the drive, the computer crashes and I have to restart.