[kovidgoyal]

oops

import wmi, pythoncom
pythoncom.CoInitialize()
_wmi = wmi.WMI()
from calibre.devices.scanner import DeviceScanner
scanner = DeviceScanner(_wmi)
scanner.scan()
from calibre.devices import devices
for d in devices():
        if scanner.is_device_connected(d):
            dev = d()

dev.open()
print dev._main_prefix, dev._card_prefix