Trendnet with AT&T router
I have a 2wire 2701HG-B wireless router with my AT&T plan of 3.0/512 and when I was using the wireless that came with the laptop, it was too short if you ask me. When I got the Trendnet TEW 641 (not sure if that's exact) I got better signal. In fact I can now sit out in the parking lot of Mcdonald's and get a good signal as of before I had to go inside just to pick it up.
The wireless (if it called something else, please let me know?) that came with the laptop was set up for 54mbps, and the Trendnet is set up for 300mbps. I just slide the Trendnet PC card into my laptop and than I just connect to a wireless router. I notice better signal or range with the Trendnet in my laptop. One of my neighbors had very low signal when using the laptop wireless, when I put in the Trendnet PC card in my laptop, their signal became very good. So I know I get better range with this Trendnet, even though my neighbors doesn't show up on there unless I locate my laptop closer to them, but to make sure it wasn't me, I took my laptop outside and see how far from my wireless network I can connect to, it went further than I'd expect. Not sure how my neighbor can have a very good signal and all of a sudden have a weak signal and I can still get a very good or excellent signal when I'm standing right at my neighbors place.