Xtreme N Express Card AdapterI looked at the reviews at newegg and saw that this adapter had a problem dropping connection with the router, but I had a DIR-655 and other d-Link products and thought I should keep the configuration the same. Anyway, I emailed d-Link tech support and was told to update the firmware on the router, which I did, but it didn't help. I just went back to my built-in 802.11g card and have the DWA-643 in a drawer. What a waste of money but I have only myself to blame. Trust reviews at newegg