Network Attached Hard Drive

How to connect and setup a My Passport to a network? I have followed all the procedures in the manual and the setup prompts, however I cannot connect to the hardrive on the network.  I can’t even see it.  I am using an iMac.

Where do you have the hard drive? Connected to the Mac or to a Router? If you have it connected to the Mac, check the link below for the steps. If you have it connected to a router, check the router manual for the steps.