Instruct: Classify a given review as either positive or negative.
Query: Unreliable device

This router is terribly unreliable. I installed it as a replacement for a 5-year-old Linksys after a power supply failure and it seemed to work fine for about two weeks. Then all of my wireless devices began to drop connection, some sporadically and some to the point where only a restart of the router could get the link back. Tech support was no help, blaming it on everything but sunspots. I finally gave up, installed a new Cisco Linksys router and tossed the DIR-615 in the dumpster. I've learned my lesson: Avoid D-Link at all cost.