D-Link AC3200 Ultra - Connecting to your USB Storage Device from a Windows PC:

156D-Link DIR-890L User Manual
Section 5 - Applications
Windows PC Conguration
Install the SharePort Plus Utility on each Windows PC:
Visit dlink.com to download and install the latest version of the D-Link SharePort Plus Installation Utility.
Upon successful installation, the SharePort Plus Utility will launch. Your PC will automatically attempt to connect to your D-Link SharePort Enabled
DIR-890L and once successful, a list of connected USB devices will be displayed. If your printer is among the listed devices, a dialog box will
automatically appear asking, “Would you like to congure auto print connect for this printer?”
To quickly set up your printer, click Yes.