I am having two computers that are connected with the help of Cat5 cable to a Linkysys router. One of those computers is running the Windows 7 and other one is running under Windows 7. If I transfer any file from Windows XP to Windows 7 computer then I get around 80 MB/s transfer speed but if the same file I transfer from the Windows 7 to Windows XP computer then it just give me 1.5 mb/s transfer speed. Can you tell me that why is showing such a big difference. Thank you.