Thanks for the link. Nothing changes though. In the USB storage device settings on the router homepage there are only the two options: DLNA and shareport. no windows network drive (or similar name, I don't remember, as I have seen on screenshots of other dlink router homepages).
So I guess it is not possible.
I do not know if you work for DLINK but maybe you can point me to a router that can do the following:
2.4 + 5GHz dualband with at least the speed of the dlink dir50L
3g 4g network connecion (maybe modem built-in? or at least usb connection for modem)
at least one free usb for a 4 TB seagate HDD (requires a higher wattage than smaller usb hdd I think)
possibility to easily map a network drive from that HDD
battery powered maybe power bank
portable size and weight
as far as I looked I cannot find any router that can do that, incredibly enough because I guess anyone who wants a travel router and knows what they want, wants these functions. I would really appreciate a hint if you know any router with these specs.
Thanks so far!