I am able to easily access my external hard drive if I plug it directly into my imac usb port. but I just got a new router and wanted to be able to access it on my home network using all of my devices, including my imac. The router is a T-Link N750.

The hard drive is connected to the router via the usb, and when I go to the original tplink set-up page, it recognizes the hard drive being there, but I have no idea where to go from here as far as being able to access it, through either my imac or any other computer in my home. Any ideas? Thanks in advance. And you may have to speak in layman's terms if I need to open any files, apps, utilities, etc. since I know many of you are a lot more tech savvy than I. Thanks in advance.