If you use Windows (98SE and later), you don't need any extra drivers. With the included drivers, I was able to make my Windows 98 system recognize and use the device. If you use Linux, the usb-storage module doesn't fully work with this device yet. You can read files and delete files, but you cannot create new files. Fortunately, I run Windows 98 in a VMWare box under Linux on my notebook computer. I was able to go through Windows 98 in VMWare to upload files onto the BP300.
If you use the device as a flash drive, you don't even need to put in a battery!