Help about using HDD on HG553

Hi everyone, sorry for english but it is my only chance for ask my question.

I just had "EchoLife HG553 - EchoLife_HG553V100R001C03B015" but i can not reach my USB HDD by router. It show its connected "Puerto 2: Seagate, FreeAgent Go" but what should i do for use hdd via router.

Thanks for replies..