I have a Netgear Ready NAS 104 external server on my iMac. I bought it a while ago as it was on sale and I can get to it on the iMac but I can't get it recognized with Disc Utility which is funny as I have my original SeaGate B/U which shows on the Disc Utility as the primary B/U for the iMac and it works like a charm. I have the NAS plugged in to the Airport Extreme router (older one) but no USB cable into the iMac. Do I need to connect the NAS to the iMac via USB or is the plug in to the router all I need? Also, the Seagate is partitioned for OS X and the NAS is not. I'm just a bit confused as I was going to let the NAS handle all the backups and loaded it with 8 TB's of discs (Also SeaGate but not partitioned for OS X) Is "Partitioned" the correct term? Still confused.