Greetings. I have one newer laptop - a Thinkpad x300 - which came with a b/g/n wireless card installed. We just got a new wireless N router and it zips along - says its got 130 Mbs throughput.
Meanwhile, I've got an older Thinkpad x40 which has only a b/g wireless card installed. So I went for an 802.11n wireless USB adapter - it only seems to get 65Mbs for a transmit rate when placed on the same network.
My question is, what is this USB missing that the installed card has which allows for greater speed? And what should I be looking forward in an adapter to get the fastest speed... (USB vs. card? Different feature set?)