There are two points you may want to notice here:
- The integration you are attempting is not officially supported since Intel Wireless Adapters are meant to be professionally installed by Original Equipment Manufacturer (OEM) technicians on certified systems only.
Your system is currently certified with the FCC in compliance with the International Special Committee for Radio Interference standards for radiated and conducted electromagnetic interference, installing any other adapter might void this certification and might not work correctly.
We recommend contacting the Original Equipment Manufacturer (OEM) to determine which product is approved for use in your computer. Only your system manufacturer is entitled to provide the list of validated and certified adapters that are compatible with your system and the proper means to do the hardware exchange for you.
Regulatory information regarding hardware installation or upgrade
- The Intel® WiFi Link 5300 is not officially supported for Windows* 8. However, it is possible you may get an inbox driver from Windows*.
Intel® Wireless Products and Microsoft Windows* 8
thanks for the help.
1. Yes I know. However dell is not supporting any kind of such upgrade. I am by myself here.
2. I just booted Windows 7. The tests give exactly the same results (12Mbps download, 70Mbps upload). I strongly believe it is not a problem of drivers. It happens in Linux too.
From your answer I guess the problem I have should not exist.
Is it possible to have such results if the antennas are not connected to the right pins?
It is possible since the issue appears to be hardware related.