Following the forum posts, originally everyone said that there was an hardware limitation for connecting n900 usb external drives because there was only a Micro-B usb port on the device instead of a Micro-AB usb port to allow USB OTG (acting as a host and slave).
Kufuatia posts jukwaa, awali kila mtu alisema kuwa kulikuwa na kiwango cha juu kwa ajili ya kuunganisha vifaa N900 USB nje anatoa sababu kulikuwa tu Micro-B USB bandari kwenye kifaa badala ya Micro-AB USB bandari kuruhusu USB OTG (mwenyeji na watumwa).