You don't want to use the ouptput of lsusb because it will convert certain values to make them easier to read. Use the calibre-debug with the -d option.
This will output all usb devices connected to your computer. The form for connected devices on Linux is (vendor_id, product_id, bcd, vendor_string, product_string)
The vendor_id, product_id and bcd are all in decimal so you will want to convert them to hex for use in the plugin. Decimal will work but hex is preferred for consistency.
You can easily convert decimal to binary by doing:
$ python -c "print hex(123)"
Where 123 is replaced by the number you want to convert.