Windows 7: usb adapter speed connected?

i have a edimax usb adapter capable of 150mbps. also i have a router linksys e2000. the router is set to auto for the "N" connection. and its using 20 to 40mhtz. put it usually always connects at 72 mbps instead of 150.. sometimes when i switch a setting via my computer with the wifi, the usb connects at 150 but when i power down usually when i go to work, it goes back to 72 connection. how do i force or whats the deal with that

The only way it will matter is if you transfer large files from one computer to another inside the router. Your ISP speed is much slow so it wont matter

true. i just did some triel and error the closer i get to the computer the higher the connection speed is in TX... so its connection at 72 for error free internet i guess. TX72mbps with RX58mbps is usually my connection ive had it TX150mbps RX120mbps but it dont matter i guess lol cause im not transfering i should still get full bandwidth is what your saying right?